Cut Sheet

Commercial Products
Switch and Outlet BOxeS and cOverS
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© February 2015
1431
NEC/CEC:
UL Standard: 514A, 514B
UL Listed: E2527
NEMA: FB-1, OS-1
4” Square Boxes with Snap-In Brackets
For 2-1/2” and 3-5/8” Metal Studs
Depth
(inches)
Stud Size
(inches)
Wiring Cubic
Inch Capacity
Type
Clamp
Knockout Description
Weight per 100
kg (lb)
Catalog Number
(Universal No.)
Sides Ends Bottom
With Nonmetallic Sheathed Cable Clamps
1-1∕2 2-1∕2 21.0 CL-26 (3)1∕2” (4)21∕32” (1)1∕2”
42.18
(93.0)
4SR-SB2-1/2
1-1/2” Deep, Welded
For 2-1/2” metal stud
1-1∕2 3-5∕8
21.0 CL-26
(3)1∕2”
(4)21∕32”
(1)1∕2”
46.72
(103.0)
4SR-SB3-5/8
1-1/2” Deep, Welded
For 3-5/8” metal stud
With Armored Cable (AC)/Metal Clad Cable (MCI, MCI-A, MCC) Clamps
1-1∕2 2-1∕2 21.0 CL-13 (3)1∕2” (4)21∕32” (1)1∕2”
53.98
(119.0)
4SX-SB2-1/2
1-1/2” Deep, Welded
For 2-1/2” metal stud
1-1∕2 3-5∕8 21.0 CL-13 (3)1∕2”
(4)21∕32” (1)1∕2”
58.51
(129.0)
4SX-SB3-5/8
1-1/2” Deep, Welded
For 3-5/8” metal stud