Cut Sheet

Commercial Products
Switch and Outlet BOxeS and cOverS
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© February 2015
1425
NEC/CEC:
UL Standard: 514A
UL Listed: E2527
NEMA: OS-1
4” Square Boxes - 2-1/8" Deep
With Knockouts
Depth
(inches)
Wiring Cubic
Inch Capacity
Knockout Description
Weight per 100
kg (lb)
Catalog Number
(Universal No.)
Sides Ends Bottom
With
Green
Ground
Wire
2-1∕8 30.3
(6)1∕2”
(3) Eccentric
KO
—
(2)1∕2”
(2) Eccentric
KO
47.17
(104.0)
4SDVB-EK-PLP 
2-1/8” Deep, Welded;
Plain vertical bracket;
Set flush with front of box
2-1∕8
30.3
(8)1∕2”
(4)3∕4”
—
(3)1∕2”
(2)3∕4”
38.56
(85.0)
4SD-SPL
(52171-SPL)
Red
Box
Option
2-1∕8
30.3
(8)1∕2”
(4)3∕4”
—
(3)1∕2”
(2)3∕4”
38.56
(85.0)
4SD-SPLRD 
2-1/8” Deep, Welded
With
Green
Ground
Wire
2-1∕8 30.3
(8)1∕2”
(4)3∕4”
—
(3)1∕2”
(2)3∕4”
38.56
(85.0)
4SD-SPLP 
2-1/8” Deep, Welded
2-1∕8 30.3
(8)1∕2”
(4)3∕4”
—
(3)1∕2”
(2)3∕4”
38.10
(84.0)
4SPD
Plenum Box, 2-1/8” Deep,
Drawn; Without any holes
and with reset knockouts
(Screws supplied with
cover, catalog number
8465P)
 Provided with green ground screw and 10” long No. 12 AWG solid, insulated green ground wire.
 For fire alarm circuits. Red powder coat finish.