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February 200078-8130-0988-9-A

4220 Cabinet Serieswith 3M™ 4320 Self-Strip Blocks

Instructions

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Contents:

1.0 General ............................................................................................................................................... 32.0 Description ......................................................................................................................................... 33.0 Accessories and Spare Parts ............................................................................................................... 104.0 Tools and Test Equipment .................................................................................................................. 115.0 Mounting Pads for 4220 Cabinets ...................................................................................................... 126.0 Cabinet Installation ............................................................................................................................ 157.0 Cable Port Sealing .............................................................................................................................. 178.0 Shield Bonding ................................................................................................................................... 219.0 Cable Termination .............................................................................................................................. 2110.0 Identify Cross-Connect Block Counts ............................................................................................... 2411.0 Jumper Wire Installation and Routing ............................................................................................... 2412.0 Jumper Wire Routing ......................................................................................................................... 2613.0 Accessories Installation ...................................................................................................................... 2714.0 Accessing Splicing Area After Jumpers Are Run .............................................................................. 2715.0 Electronic/Fiber Equipment Mounting Kits ....................................................................................... 2816.0 Repeater Cabinets ............................................................................................................................... 31

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1.0 General

1.1 The 3M™ 4220 Cabinet Series consists of the D, DD, E, EE, F, G, KF, and K cabinets. These cabinetshold frames that accommodate cross-connect blocks. The cabinets are available empty or with frames.The frames can be ordered empty or with 3M™ 4320 Self-Strip System Blocks loaded.

1.2 The 4220 Cabinet Series have mounting kits for electronic and fiber equipment. The 3M™ 4220-ER and4220-FR are designed for mounting repeaters.

1.3 The following tools are needed for the cabinet installation:

• 3/8" drive ratchet with 7/16" and 9/16" sockets• 1/2" drive ratchet with 3/4" socket• 3" extension for 3/8" drive ratchet• module/connector splicing tools

1.4 Cabinet mounting methods. Choose and procure one of the following mounting methods.

• 3M™ Mounting Ring for the 4220 Cabinet• 1/2-13 UNC anchor inserts (4) (use with pour-in-place pad, see step 5.3)• Manufactured precast or fabricated pad

Additional materials needed for the 4220 Series Cabinet installation:

• Port sealing materials

2.0 Description

2.1 The pair count capacity with the 3M™ 4320 Self-Strip System Blocks is shown below:

D DD E EE F G KF K

Cabinet Maximum 600 1200 900 1800 1800 3600 2700 5400

Pairs per Frame 600 600 900 900 600 600 900 900

Frames per Cabinet 1 2 1 2 3 6 3 6

Notes: These cabinets are designed to permit combination of cross-connect, electronic/fiber opticequipment mounting, and repeater mounting. Contact your local 3M representative for assistance,or call 1-800-426-8688 for further information.

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2.2 Components Identification

2.2.1 3M™ 4220 D/DD and 4220 E/EE Cabinets

Note: The 4220 D and E are single-sided cabinets with one door.The 4220 DD and EE are double-sided cabinets with two doors.

4220 E/EE (front)

4220 E/EE (front open)

4220 E (rear view with base opened)

4220 E (rear)

Cross-connectblock frame

Removableback panel

Cover plate

Cable port plate

4220 D/DD (front)

4220 D/DD (front open)

4220 DD (rear view with base opened)

4220 D (rear)

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2.2.2 3M™ 4220 F, G, KF and K Cabinets

Note: The 4220 F and KF are single-sided cabinets with two doors and back panels.

The 4220 G and K are double-sided cabinets with four doors.

4220 F (rear view)

4220 G/K (base opened)

4220 F/G/KF/K (front open)

4220 F/G/KF/K (front view)

Cross-connectblock frames

Removableback panel(s)

Cover plate

Frame support

Cable port plate

4220 KF (rear view)

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2.2.3 3M™ Frames can be ordered loaded with blocks or empty.Blocks can be terminated with 3M™ MS2™ Modules or 3M™ 710 Connectors.

4220 D, DD, F and GSS6 Frame

4220 E and EESS9 Frame

4220 K and KFSS9K Frame

1 Left door assembly

2 Right door assembly

3 Vertical end

4 Cover

5 Base assembly1

2

4

5

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2.3 The external parts of the 4220 Cabinet are:

4220 D/E/F/G/KF/K (front view)

Note: 4220 D and E Series have only a single rightdoor assembly.

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2 2 2

3 4

5

1 Upper frame support

1a Upper frame drop down bracket(only on 4220-KF/K)

2 Cross-connect frame

3 Lower frame support

4 Port housing

5 Base cover plate

2.4 The internal parts of the 3M™ 4220 Cabinet are:

4220 F/G/KF/K (Rear View)

1

1a

8

F

R

A

M

E

2.5 Dimensions of the 3M™ 4220-D, DD, E and EE Cabinets:

A

C

D

F

G

B

H

J

E

4220-D/DD 4220-E/EE

A 22 1/2" 36 1/2"

B 18 " 18 "

C 49 1/4" 49 3/4"

D 22 3/8" 36 3/8"

E 17 1/4" 17 1/4"

F 30 " 30 "

G 14 1/4" 15 "

H 41 " 41 "

J 7 1/4" 7 1/2"

2.6 Dimensions of the 3M™ 4220-G and 4220-K Cabinets:

F

R

A

M

E

A

C

D

F

G

B

H

J

E

4220-F/G 4220-K/KF

A 57 1/2" 57 1/2"

B 18 " 18 "

C 49 3/4" 64 3/4"

D 57 3/8" 57 3/8"

E 17 1/4" 17 1/4"

F 30 " 45 "

G 15 " 15 "

H 41 " 56 "

J 7 1/2" 7 1/2"

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2.7 Clearance Requirements of the 3M™ 4220 Cabinets:

D

C

B

A

D/DD E/EE F, G, K and KF

A 22 1/2" 36 1/2" 57 1/2"

B 18 " 18 " 18 "

C 19 " 33 1/2" 27 "

D* 56 " 85" 72"

Note* For double-sided cabinets only.

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3.0 3M™ Accessories and Spare Parts

3.1 a) 4246 Chamber Cover - For coveringunused frame positions in 4220-Fand G cabinet.

4" diameter

3.4 4297-3 Port Kit

3 1/4" diameter

3.5 4297-FPE Flexible Port Entry Kit

3.6 4298 Flex Port Kit - System for providing baseisolation.

3.3 4297-2 Port Kit

3.2 Mounting Rings - To anchor cabinets onto theconcrete slab.

b) 4246-K Chamber Cover - For coveringunused frame positions in 4220-K and KFcabinets.

4256-D/DD

4256-E/EE

4256-F/G/K/KF

3.7 Binding Post Block Kits - For terminatingcables on frames using the 4320 series blocks.

3.9 4324 Priority Circuit Caps - For protectingpriority circuits.

3.8 Self Strip Replacement Caps - (100 tan, 100orange)

Note: Foam tape and expanding form required.

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3.10 4361 Spacer Blocks - To cover unused blockpositions in frames.

4361 Self-StripBlocks

3.11 Wire Spools

• 4068 - 800' 24 AWG orange/white jumper wire• 4069 - 250' 24AWG orange/white jumper wire• 4268 - 800' 22 AWG violet/white jumper wire• 4269 - 250' 22 AWG violet/white jumper wire• 4368 - 800' 22 AWG red/white jumper wire• 4369 - 250' 22 AWG red/white jumper wire

4.7 4328 Self-Strip 25-Pair Probe.

4.8 4329 Self-Strip 5-Pair Probe.

4.0 3M™ Tools and Test Equipment

4.1 4041 Splice Head - For splicing 3M™ MS2™

Modules.

4.2 4344 MS2™ Splice Head Frame Adapter - Forsplicing modules of blocks on empty frames.

4.6 4327-A Self-Strip Pair Probe and Dish.

4.3 710 Uni-Presser 25-Pair Cutter Presser - Forsplicing 3M™ 710 Connectors.

4.4 Self-Strip 3M™ 710 Splice Head FrameAdapter - For splicing Connector Blocks onempty frame.

4.5 4327P Self-Strip Pair Pocket Test Probe.

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Opening14 3/4" x 6 3/4"

Opening14 3/4" x 6 3/4"

Cable duct location markers

Internal Mount

Removable section for rehab

External Mount

c) 4256 F/G/KF/K Mounting Ring

Cable duct location markers

Opening14 3/4" x 6 3/4"

Removable section for rehab

Internal Mount

External Mount

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5.0 Mounting Pads for 4220 Cabinets

5.1 Mounting Ring Descriptionsa) 4256 D/DD and E/EE Mounting Ring

B

A

B

b) Dimensions of Mounting PadA B

4256 D/DD 26" 19"4256 E/EE 41" 19"4256 F/G/KF/K 62" 19"

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5.2 Slab Preparation

a) Prepare desired cabinet location ground surface and build pad form to the dimensions of the drawing.

b) Block off cable entry area(s) of pad to keep clear of concrete.

c) Align cable duct(s) with cable duct location markers.

d) Place leveling stakes per drawing dimensions. Make sure tops of stakes are level with each other andwith the perimeter form.

e) Attach the anchors to the mounting ring with bolts (anchors and bolts provided with ring).

Note: Anchors can be located for either internal or external attachment to the cabinet.Note: Side of mounting ring can be cut open to allow placement around cable for rehab applications. f) Set mounting ring on leveling stakes. Make sure ring is level. Secure to leveling stakes with four nails.

g) Pour concrete around mounting ring until concrete is level with top of ring. Inspect for good concreteflow around anchors.

Note: Optional procedure is to pour and level concrete. Then press mounting ring into soft concrete until itis flush with top surface.

5.2.1 Recommended pad dimensions:

Note: Minimum allowable pad should extend 6" around mounting ring. Small pads will require increasedthickness/weight to support cabinet.

levelingstakes (4)

A

C

K

F

EB D

4"

(4256 F/Gmounting ring shown)

A B C D E F G H J K

4256 D/DD 38" 60" 24" 7" 17" 21 1/2" 19" 9 1/2" 7" 26 1/2"

4256 E/EE 53" 75" 29" 12" 17" 29" 15" 19" 7" 34"

4256 F/G/ 74" 75" 50" 12" 17" 29" 32" 21" 7" 34"

J

G

cable entryarea

H

K/KF

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A B C D E F G H J K

4220 D/DD 38" 60" 9 1/2" 19" 26 1/2" 7" 11" 16" 25" 10" Internal

4220 E/EE 53" 75" 19" 15" 34" 7" 18 1/2" 16" 32 1/2" 10" Internal

4220 F/G/K/ 74" 75" 20" 34" 34" 7" 20" 33 3/4" 32 1/2" 10"KF Internal

4220 D/DD 38" 60" 9 1/2" 19" 26 1/2" 7" 7" 24" 23 1/2" 13" External

4220 E/EE 53" 75" 19" 15" 34" 7" 7 3/8" 38 3/8" 31" 13" External

4220 F/G 74" 75" 20" 34" 34" 7" 7 3/8" 59 3/8" 31" 13" External

5.3 Slab Preparation Using Anchor Inserts.

a) Prepare desired cabinet location ground surface and build pad form to the dimensions of the drawing.

b) Block off cable entry area of pad to keep clear of concrete.

c) Pour concrete, making sure surface is level.

d) Place anchor inserts at dimensions of drawings. Select internal or external attachment to cabinet.

K

J

HG

E

FB

C

D

A

Note: Depth equals 4".

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b) Remove cover plate, front cable port plate, andlower frame support.

Note: If a lift boom truck is used, reposition the twoside lifting straps for attachment of a sling.Attach lift device (sling) to cabinet lift straps.

c) Position cabinet onto the mounting points of thering or anchors. Align cables with cable ports.

6.2 Mounting Cabinet on Slab.

a) • On the single-sided cabinet, loosen the screws and remove back panel.• On double-sided cabinet, open rear doors and remove frames, if factory installed.

Note: If lift equipment (boom truck, etc.) is not available,remove all frames to minimize weight.

6.0 Cabinet Installation

6.1 Install feeder and distribution cables. Provide cable length:• 4220 D/DD/E/EE/F/G - 9' above pad• 4220 K/KF - 11' above pad

4220 D/DD/E/EE 4220 F/G/K/KF

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6.2 d) Secure cabinet to slab.

Note: The cabinets have two sets of mounting holes, external and internal. Refer to your company practicefor which one to use.

Internal MountPosition

For external mounting use the mounting lugs provided with the cabinet. Place shims to level the cabinetif needed. MOUNTING LUGS, 1/2" BOLTS, AND SHIMS ARE IN THE PARTS BAG INCLUDEDWITH THE CABINET.

Note: For proper door clearance and operation, the cabinet must be level and the doors square.

shim

mounting lug

For internal mounting use the1/2" bolts provided with thecabinet. The internal mountingholes are located on the insideflanged portion of the base.

e) When the cabinet is secured, remove the lifting straps bolted to the sides of the cabinet. Replace thebolts with the carriage-bolt heads to the outside of the cabinet.

f) Identify cabinet (street address) on street side door according to your company procedure.

6.3 Installing a 4220 D, E, F, or KF cabinet against a wall or obstruction.

Note: Mounting pad requirements are the same.

a) Open the front door(s) of the cabinet. Remove these door(s) with the hinges on them, back panel andback panel's screw/nut holders from the cabinet.

b) Remove frames if loaded. Remove upper and lower frame supports.

c) Remove port housing(s), port housing support plate(s) and base cover plate(s).

d) Install back panel's screw/nut holder and back panel on the front of the cabinet.

e) Position the cabinet (with the panel side toward the wall or obstruction) around the cables.

f) Reinstall base cover plate(s), port housing support plate(s) and port housing(s).

g) Open cables according to the port sealing method recommended by your company.

h) Install the door(s) to the rear of the cabinet.

i) Level/shim and tighten the mounting bolts of the cabinet.

j) Apply port sealing method recommended by your company.

k) Install upper and lower frame supports.

l) Splice the block tails by the "rear frame side splicing" method.

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7.0 Cable Port Sealing

Six methods are available to seal the cable ports:

Method 1 - Sealing Tape collarMethod 2 - Foam collarMethod 3 - 3M™ 4297 FPE (Flexible Port Entry) KitMethod 4 - 3M™Scotchcast™ 8964 Moisture Air Block KitMethod 5 - Sleeve/CompoundMethod 6 - Sleeve/Compound/Moisture Block

7.1 Method 1 – Sealing Tape Collar

Note: Materials required:• 1 1/2 x 1/8 inch sealant tape

a) Remove cable sheath.

b) Clean and scuff cable in location of cable ports.

c) Install shield connectors and attach bond straps,making sure that the straps will reach thebond plate.

d) Wrap sealing tape around cable. Build diameterto 1/4" larger than I.D. of cable port.

e) Install cable ports around cable with sealing tape.

f) Replace base covers.

Sheath required for cablewith sealing tape collarapplication

14"

Slab

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7.2 Method 2 – Foam Collar

Note: Materials required:• 4430 foam tape• Scotchcast 4411B Pedestal Base Sealant Kit

c) Wrap 4430 foam tape around cables just above the top of the cable ports, making it slightly largerthan the inside diameter of the ports.

d) Slide the tape bundle down into the port openings, leaving 1/2" of space between the foam tape andthe top of the ports for the expanding foam. Tighten all bolts.

f) Pour expandable sealant 1/8" thick on top of the foam tape and ensure that the material surrounds the cables and creates a seal. Allow space for foam to expand, and time for foam to harden (10 minutes).

e) Mix the 4411 expanding sealant according to instructions provided.

Note: Carefully follow safety, health and environmental information given on product label or the Material Safety Data Sheet for the compound being used.

a) Install port housing support plate(s).

b) Install outer half of the port housing.

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7.3 Method 3 – 3M™ 4297-FPE Flexible Port Entry Kit

Note: This option is used when several cables enter into the cabinet. The 4297-FPE Kit must be orderedseparately. It uses a large, open cable port and is sealed with 4430 foam tape and 4411 expanding sealant.

d) Mix the expanding sealant according to manufacturer's instructions.

Note: Carefully follow safety, health and environmental information given on product label or the MaterialSafety Data Sheet for the compound being used.

e) Pour 4411 expandable sealant 1/8" thick on top of the foam tape and ensure that the material surroundsthe cables and creates a seal. Allow space for foam to expand.

f) Allow foam to harden, usually 10 minutes, then continue with splicing.

a) Remove factory installed black plastic ports.

b) Remove the rear plate from the flexible port entry kit. Install the front port onto the threaded studs.Install washers and nuts and tighten.

c) Place cables into port and install the rear plate loosely. Wrap each cable with at least one layer of foamtape. Leave 1/2" of space between the top of the tape and top of the port. Install port housing supportplate and tighten all bolts.

Rear Plate

Note: Materials required:• 4297-FPE• 4430 foam tape• Scotchcast 4411B Pedestal Base Sealant Kit

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10"

Sheath required for3M™ Scothcast 8964application

Slab

7.4 Method 4 – 3M™ Scotchcast™ 8964 Moisture/Air Block Kit

a) Remove cable sheath.

b) Install shield connectors and attach bond straps,making sure that the straps will reach the cabinetbond plate.

c) Route the bond strap out the bottom of the blockwith sufficient length to go back up through thecable ports and to the bond plate.

d) Follow instructions packaged with the 8964 Kit.

Note: Carefully follow safety, health and environmentalinformation on the product label or Material Safety DataSheet for compound contained in the 8964 Kit.

e) Build the block so that the outside diameteris 0.2" smaller than the cable port.

f) Wrap sealing tape around the block to seal it inthe cable port. Remember when building theblock not to exceed port opening.

• 3 port = 3 1/4 inches• 2 port = 4 inches

g) Place cable ports around cables.

h) Replace base covers.

bond strapsealing tape

7.5 Method 5 – Sleeve/Compound

a) Install sleeve(s).

b) Fill sleeve with either 3M™ Scotchcast™ 4407Encapsulating Compound or Gella 4441 orHigh Gel 4442 Reenterable Compound.

Note: Carefully follow safety, health andenvironmental information on the productlabel or Material Safety Data Sheet forcompound being used.

c) Replace base covers.

Note: The 4298 Flex Port Kit can be used forMethod 5 and Method 6.

Cable Tie

Filled and Air Core Cables(Without Moisture Block)

B Sealing Tape

Sleeve

Cable Tie

Fold Bag Over Top of Cable Port

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7.6 Method 6 – Sleeve/Compound/Moisture Block

a) Install sleeve(s).

b) Fill sleeve with either 3M™ Scotchcast™ 4407Encapsulating Compound or Gella 4441 orHigh Gel 4442 Reenterable Compound.

Note: Carefully follow safety, health andenvironmental information on the productlabel or Material Safety Data Sheet forcompound being used.

c) Replace base covers.

Air Core Cables(With Moisture Block)

Cable Tie

B Sealing Tape

Sleeve

Cable Tie

Fold Bag Over Top of Cable Port

9.0 Cable Termination

9.1 Field splicing of factory loaded Self-Strip BlockFrames.

8.2 Identify cable bond straps on bond log label in thefront of the cabinet.

9.2 Break feeder and distribution cables into 150 pairgroups. Route the groups up to the tie bar andacross to the appropriate frame location accordingto frame count.

8.0 Shield Bonding

8.1 Install shield bond connectors according to yourcompany's practice and attach bond straps withsufficient length to reach the cabinet bond plate.

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9.3 Install factory loaded frames on the front sideof the cabinet.

a) Rest frames on bottom pivots.b) Attach safety cable to frame.c) Secure frames in upright position with screw(s).

9.4 Splice frame modules to cable.

Note: Splicing should be done from the back of the cabinet.

a) Set up a splicing head and supporting system.b) Position the splice head so that connections are made in staggered groups for maximum cable length.c) Splice frames to cable per your company procedure.d) Cable tie groups, creating adequate slack to lower frames.

4220 D/DD, E/EE, F & G

Note: If you are using non-sealed 3M™ MS2™ modules, install 3M™

4075 or 4077 Series Sealant boxes.

Note: Carefully follow safety, health and environmental informationon sealant box label or Material Safety Data Sheet.

4220 K/KF

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9.6 Splicing the Rear Frames of a double-sided cabinet.

a) Install the left-hand-side frame to the rear of the cabinet, rest the frame on the pivots and attach thesafety cable to the frame.

b) Mount the splice head alongside the frame so that the modules/connectors can be stored in one of thetwo methods as the front frame connection.

c) Splice the frame stubs and cable groups together following your company procedures.

d) After the splicing is complete, bundle and store connections the same as the front frames.

e) Repeat this procedure with the middle frame.

f) Use a splice box, or equivalent, to support the right-hand frame to keep it off the ground and toprevent damage.

g) Untie the frame stubs from the back of the frame and lay it on the metal side. Bring the stubsto the cabinet.

h) Mount the splice head in the cabinet so that the modules/connectors can be bundled and stored in thesame method as the front frame connection.

i) Splice the frame stubs and cable groups together following your company practice.

j) After the splicing is complete, install this frame by resting the frame on the pivots and attach thesafety cable to the frame.

k) Bundle and store the connections in the same manner as the front frames.

9.5 Frame Cable Slack Storage (optional)

4220 D/DD, E/EE, F & G 4220 K/KF

a) After field splicing is completed, dress cable conductors to permit a complete up-down loop of wireplus wire length to splice to frame tails. Fold and bundle this group so that it will tuck into the spacebehind the frames blocks.

b) Use the holes in the back of the frame to secure these folded groups in place. Maintain the slackto lay the frame down from the cabinet. Secure each group to the bottom of the frame.

c) Repeat two previous steps with all of the spliced groups.

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Front to Back pass through

Front to Back pass through

Front to Back pass through

10.0 Identify Cross-Connect Block Counts

10.1 Determine desired feeder/distribution layout per illustrations below.

FEEDER1 101

200100

1DISTRIBUTION

200

201

400

1

300

4220 D/DD Cabinets 4220 E/EE Cabinets

4220 F/G/K/KF Cabinets

1

FEEDER

300

301

600

1

600 or(900)

1

600 or(900)

601 or901

1200 or(1800)

Recommended Feeder Distribution Layouts

DISTRIBUTION

FEEDER

DISTRIBUTION

DISTRIBUTION

FEEDER

DISTRIBUTION

DISTRIBUTION

DISTRIBUTION

DISTRIBUTION

FEEDER

4220 KF and K 900 Pair Frame Count in ( )

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10.2 Remove protector tape from identification pads on the blocks in the cabinet.

10.3 Select proper sequence of labels (blue = distribution; green = feeder) and detach strip of 20 labels fromsheet. Carefully remove protective backing from strip.

10.4 Align number 1-6-11, etc. with identification pads on left and press into place. Align numbers 5-10-15,etc. with right identification pads and press in place. Remove the outer liner as shown.

10.5 Fill in Binding Post Log on cabinet door.

90° Hook

1/2" - 3/4"

11.0 Jumper Wire Installation and Routing

11.1 Make sure wires have clean cut ends and bend the last 1/2" - 3/4" of wire 90°. The post slot must be inthe vertical/insertion position.

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11.2 Split pair (TIP - left, RING - right) at assigned post positions. Insert wire into port and through the postuntil the wire extends out the exit port.

11.3 With a screwdriver, rotate post 90° clockwise.

Note: Make sure screwdriver blade is fully inserted into post slot before rotating. To remove jumper wire,rotate post 90° counterclockwise.

11.4 Always route jumper wires below the connected post.

90°

RING - rightTIP - left

3" slackeach end

Pair 1 Pair 5

Pair 25Pair 21

3" slackeach end

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13.0 Accessories Installation

13.1 3M™ 4327 Series Single-Pair Probes:

a. Align pair probe and insert pins in test ports.

b. Depress clamps to allow clearance over cap heads. Push probe forward until clamps snap behind cap.

13.2 3M™ 4328 SS 25 Pair Test Probe

a. To operate, see instructions with unit.

13.3 3M™ 4324 SS Priority Circuit Caps:

a. Attach 3M™ 4324 Priority Caps on special circuits.

b. Identify circuit on matte surface of priority cap.

4324 Cap

14.0 Accessing Splicing Area After Jumpers Are Run

Note: The frames are very heavy.

14.1 For 4220-K Cabinet:

a) Loosen two security screws in top support bar.

b) Lower all frames at once.

14.2 For 4220-D, E, F, and KF remove back panel.

14.3 For 4220-DD, EE, and G lower appropriateframe(s) for excess.

security screws

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b) When installing electronic/fiber equipment with 19" centers, one 300-pair cross-connect frame can beadded. A second cross-connect frame can be added on the opposite side of cabinet.

15.0 Electronic / Fiber Equipment Mounting Kits

15.1 Two kits are available to convert the cabinets to house electronic/fiber equipment:

a) The EC/GC Carrier Mounting Bar Kit is for the 4220-E, EE, F and G cabinets.b) The KC Carrier Mounting Bar Kit is for the 4220-K and KF cabinets.

15.2 Configuration for 4220-E, EE

a) Attach vertical mounting bars to top and bottom frame supports. Holes are provided for both19" and 23" spacing.

27"

19"

23"vertical

mounting bars

27" 19"

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15.3 Configuration for 4220 F and G Cabinets:

a) Attach vertical mounting bars to top and bottom frame supports. Holes are provided for both19" and 23" spacing.

23" 23"

19" 19"

27"

b) One 600-pair cross-connect frame can be combined with either 19" or 23" vertical frame. A secondcross-connect frame can be added on the back if needed.

27"

19"

23"

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15.4 Configuration for the 4220 K and KF Cabinets.

a) Attach vertical mounting bars to top and bottom frame supports. Holes are provided for both19" and 23" spacing.

23" 23"

19" 19"

45 1/2"

b) One 900-pair cross-connect frame can be combined with either 19" or 23" vertical frame.

19"

23"

4220-K cabinet shown

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49 3/4"

20"36 1/2"57 1/2"

49 3/4"

20"

4220-ER (Houses two repeaters)

4220-FR (Houses four repeaters)

16.0 3M™ Repeater Cabinets

16.1 The 4220-ER and 4220-FR cabinets are designed for mounting repeaters. The 4220-ER will accept tworepeaters, the 4220-FR will accept four repeaters.

16.2 Description - cabinet sizes and capacities:

16.3 Parts Identification - 4220-ER cabinet

cover plate

cable porthousing

mountingframes for two

repeaters

16.4 Parts Identification - 4220-FR cabinet

mountingframes for four

repeaterscable porthousing

cover plate

Note: All other areas such as accessories, slab mounting of cabinet, splicing, etc. are the same as forstandard cabinets.

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Litho in USA© 3M IPC 1999 78-8130-0988-9-A

Printed on 50% recycled paperwith 10% post-consumer

Telecom Systems Division6801 River Place Blvd.Austin, TX 78726-9000800/426-8688www.3M.com/telecom

Important NoticeBefore using this product, you must evaluate it and determine if it is suitable for your intended application. You assume all risks and liability associated with such use.

Warranty; Limited Remedy; Limited Liability. This product will be free from defects in material and manufacture as of the date of purchase. 3M MAKES NOOTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR APARTICULAR PURPOSE. If this product is defective within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the3M product or refund the purchase price of the 3M product. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this 3Mproduct, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted.