Cut Sheet

DIMENSION (IN.)
CAT. NO. SIZE A B
422
1
⁄2"
5
⁄8 .025
423
3
⁄4"
11
⁄16 .025
424 1"
7
⁄8 .025
425 1
1
⁄4" 1 .030
426 1
1
⁄2" 1 .030
427 2" 1
1
⁄8 .030
428 2
1
⁄2"1
1
⁄4 .040
429 3" 1
1
⁄2 .040
430 3
1
⁄2"1
25
⁄32 .055
431 4" 2
1
⁄32 .055
433 5" 2
1
⁄2 .070
434 6" 2
1
⁄2 .070
Oxygen index >28° UL File No. E-23018 CSA File No. 589
Rigid and Intermediate Metal Conduit Fittings
Application
• To bush knockout openings in metal
boxes or enclosures
Features
• One-piece construction designed
to snap in place
• High-impact strength, self extinguishing,
non-dripping (per UL 94) polycarbonate
construction
Standard Material
Polycarbonate rated for 105° C (221° F) application
Standard Finish
As molded
Range
.875" through 2.469" nominal diameter knockout
opening (
1
⁄2" through 2" trade size knockouts)
Wall thickness of box or enclosure
.095" max. up to 1" trade size
.140" max. 1
1
⁄4" through 2" trade size
Snaps into a regular bushing to
make a UL Listed insulated bushing!
INSULINER
®
Sleeves
• Converts ordinary bushing to code-approved
insulated bushing without disturbing wiring
• For use with standard rigid conduit, EMT
(thinwall conduit) or any standard bushed outlet
• Especially suited for use with flexible
metallic conduit
• High-dielectric nylon material, rated 105° C
Knockout Bushing
Provides smooth, rounded
insulation surface for
easy wire pulling!
• Quickly snaps into outlet box,
switch box or other enclosure
left vacant by wiring modifications
or maintenance changes
• High-impact polycarbonate,
one-piece construction
• Easily installed by hand
• UL Listed 105° C
Listings/Compliances
UL (UL File No. E-3803)
CSA (LR-589,LR-4484)
UL 514B
CSA C22.2 No. 18
NFPA 70-1999 (ANSI)
DIMENSION (IN.)
CAT. NO. SIZE A B
1460
1
⁄2"1
1
⁄32
13
⁄32
1461
3
⁄4"1
1
⁄4
7
⁄16
1462 1" 1
9
⁄16
1
⁄2
1463 1
1
⁄4"1
29
⁄32
9
⁄16
1464 1
1
⁄2"2
5
⁄32
19
⁄32
1465 2" 2
21
⁄32
5
⁄8
UL File No. E-23018 CSA File No. 2884
• Removable with pliers
•
1
⁄2" through 1
1
⁄4" sizes in steel
• 1
1
⁄2" and 2" sizes in malleable iron
Makes a workman-like seal against grit, plaster and mischief!
CAT. FOR USE IN DIMENSION (IN.)
NO. KO SIZE* B
3210 .875 .360
3211 1.109 .360
3212 1.375 .360
3213 1.734 .400
3214 1.984 .520
3215 2.469 .520
* Per UL and NEMA standards. Refer to “Knockout Plugs”
table on next page.
Oxygen index >28° UL 94V-1
UL File No. E-3803 CSA File No. 589
Slip over wires —
insert into bushing —
snaps into place
3210 Series
Capped Bushings
A-12
United States
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800.816.7809
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