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Steel Boxes, Covers, & Accessories
4" Square Boxes and Extensions (104)
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Box Depth
1-1/2" (37)
1-1/4" (2)
1/2" (1)
2-1/8" (39)
3-1/2" (13)
3/4" (1)
4" (5)
Sloped (1)
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Brackets
AB - Vertical Right Angle (7)
B - Horizontal Wood Spike (3)
External Tabs (1)
F - Flat Vertical (10)
MS - Metal Stud (6)
Old Work Clips (7)
W - Vertical Offset (1)
WB - Vertical Wood Spike (8)
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Certifications
ROHS (84)
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Color
Silver (99)
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Cubic Capacity
17.5 (286.8) (2)
21.0 (344.1) (41)
30.3 (496.5) (38)
50.0 (819.4) (13)
56.0 (917.7) (5)
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Knockouts
(12) 1/2 in. Side Knockouts (2)
(12) 1/2 in. Side Knockouts, (4) 1/2 in. Bottom Knockouts (2)
(12) 1/2 in. Side Knockouts; (4) 1/2 in. Bottom Knockouts (2)
(12) 1/2 in. Side Knockouts; (5) 1/2 in. Bottom Knockouts (1)
(2) 1/2 in and (1) 1/2-3/4 in. Knockout, (4) BX/MC Clamps, (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. (1) 1/2-3/4 in. Side Knockouts and (4) MC/BX Clamps; (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Knockout, (4) NM Clamps, (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockout, (4) BX/MC Clamps, (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockout, (4) NM Clamps, (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockouts and (4) MC/BX Clamps; (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockouts and (4) NM Clamps; (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockouts, (4) BX/MC Clamps, (1) 1/2 in. Bottom Knockout (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockouts, (4) NM Clamps, (1) 1/2 in. Bottom Knockou (1)
(2) 1/2 in. and (1) 1/2-3/4 in. Side Knockouts, (4) NM Clamps, (1) 1/2 in. Bottom Knockout (1)
(3) 1/2 in. Knockouts and (4) MC/BX Clamps, (1) 1/2 in. Bottom Knockout (1)
(3) 1/2 in. Knockouts; (4) NM Clamps; (1) 1/2 in. Bottom Knockout (1)
(3) 1/2 in. Side Knockouts and (4) BX/MC Clamps, (1) 1/2 in. Bottom Knockout (1)
(3) 1/2 in. Side Knockouts and (4) MC/BX Clamps, (1) 1/2 in. Bottom Knockouts (1)
(3) 1/2 in. Side Knockouts and (4) NM Clamps; (1) 1/2 in. Bottom Knockout (1)
(4) 1 in. and (4) 3/4 in. Side Knockouts; (2) 1/2 in. and (2) 3/4 in. Bottom Knockouts (1)
(4) 1/2 in. and (4) 3/4 in. Knockouts (1)
(4) 1/2 in. and (5) 1/2-3/4 in. Side Knockouts, (3) 1/2 and (2) 1/2-3/4 in. Bottom Knockouts (1)
(4) 1/2-3/4 in., (2) 3/4 in and (2) 1 in. Side Knockouts; (2) 1/2 and (2) 3/4 in. Bottom Knockouts (1)
(6) 1/2 in and (3) 1/2-3/4 in. Knockouts, (3) 1/2 in and (2) 1/2-3/4 in. Bottom Knockouts (1)
(6) 1/2 in and (6) 1/2-3/4 in. Side Knockouts; (2) 1/2 and (2) 3/4 in. Bottom Knockouts (1)
(6) 1/2 in. Knockouts; (6) 1/2-3/4 in. Knockouts (1)
(6) 1/2 in. Side Knockouts and (4) BX/MC Clamps, (1) 1/2 in. Bottom Knockout (2)
(6) 1/2 in. Side Knockouts and (4) MC/BX Clamps; (1) 1/2 in. Bottom Knockout (2)
(6) 1/2 in. Side Knockouts and (4) NM Clamps; (1) 1/2 in. Bottom Knockout (2)
(6) 1/2 in. Side Knockouts and (4) NM Clamps; (1) 1/2 in. Bottom Knockouts (1)
(6) 1/2 in. Side Knockouts, and (4) NM Clamps, (1) 1/2 in. Bottom Knockout (1)
(6) 1/2 in. adn (6) 1/2-3/4 in. Side Knockouts (1)
(6) 1/2 in. and (3) 1/2-3/4 in. Knockouts, (3) 1/2 in and (2) 1/2-3/4 in. Bottom Knockouts (1)
(6) 1/2 in. and (3) 1/2-3/4 in. Knockouts, (3) 1/2 in. and (2) 1/2-3/4 in. Bottom Knockouts (1)
(6) 1/2 in. and (3) 1/2-3/4 in. Side Knockouts, (3) 1/2 in. and (2) 1/2-3/4 in. Bottom Knockouts (2)
(6) 1/2 in. and (3) 1/2-3/4 in. Side Knockouts, (3) 1/2 in. and (2) 3/4 in. Bottom Knockouts (1)
(6) 1/2 in. and (6) 1/2 and 3/4 in Knockouts (1)
(6) 1/2 in. and (6) 1/2-3/4 in. Side Knockouts, (2) 1/2 in. and (2) 3/4 in. Bottom Knockouts (1)
(6) 1/2 in. and (6) 1/2-3/4 in. Side Knockouts; (2) 1/2 in. and (2) 3/4 in. Bottom Knockouts (4)
(6) 3/4 in. Side Knockouts, (2) 1/2 in. and (2) 3/4 in. Bottom Knockouts (1)
(6) 3/4 in. Side Knockouts, (3) 1/2 in. and (2) 3/4 in. Bottom Knockouts (1)
(8) 1 in Side Knockouts; (2) 1/2 and (2) 3/4 in. Bottom Knockouts (1)
(8) 1 in. Side Knockouts (2)
(8) 1 in. Side Knockouts; (2) 1/2 in. and (2) 3/4 in. Bottom Knockouts (3)
(8) 3/4 in. Side Knockouts (4)
(8) 3/4 in. Side Knockouts; (2) 1/2 and (2) 3/4 in. Bottom Knockouts (2)
(8) 3/4 in. Side Knockouts; (3) 1/2 in. and (2) 3/4 in. Bottom Knockouts (2)
Blank; No Knockouts (3)
No Knockouts, Blank (2)
Side: (6) 1/2 and (6) 1/2 and 3/4 in.; Bottom: (3) 1/2 in. and (2) 3/4 in. (3)
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Material
0.0625 Galvanized Steel (1)
304 Stainless Steel (2)
316 Stainless Steel (2)
Galvanized Steel (97)
Zinc Plated Steel (1)
Zinc Plated Steel; Painted Red (1)
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Size
4" (1)
Fits 1/2 in. or 3/4 in. Conduit (1)
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4" Square Box, 3-1/2" Deep - Welded, W/Conduit KO's
SKU: 52181-1
Model: 52181-1
$17.09
SKU: 52181-1
Model: 52181-1
$17.09
4" Square Box, 3-1/2" Deep - Welded, W/Conduit KO's
SKU: 52181-3/4
Model: 52181-3/4
$17.09
SKU: 52181-3/4
Model: 52181-3/4
$17.09
4" SQUARE BOXES, 3-1/2" DEEP - WELDED W/CONDUIT KO'S
SKU: 52181-3/4-1
Model: 52181-3/4-1
$17.09
SKU: 52181-3/4-1
Model: 52181-3/4-1
$17.09
4" Square Box Extender - Raised 3/4"
SKU: BEX-475
Model: BEX-475
$10.71
SKU: BEX-475
Model: BEX-475
$10.71
4 Square Junction Box with Ceiling Grid Span Bar, 3-1/2 in. Deep, 1/2 & 3/4 in. Knockouts
SKU: 52181-VTBAR
Model: 52181-VTBAR
$29.37
SKU: 52181-VTBAR
Model: 52181-VTBAR
$29.37
4" Square Concrete Slab Box, 4" Deep - Welded, No Knockouts
SKU: 52191-BLNK
Model: 52191-BLNK
$31.79
SKU: 52191-BLNK
Model: 52191-BLNK
$31.79
4" Square Bracketed Box, 1-1/2" Deep - Welded, W/Romex Clamps
SKU: 52151-BR
Model: 52151-BR
$9.44
SKU: 52151-BR
Model: 52151-BR
$9.44
4" Square Extension/Adapter Ring, 1-1/2" Deep - Welded, W/Conduit KO's
SKU: 53151-SUB
Model: 53151-SUB
$10.07
SKU: 53151-SUB
Model: 53151-SUB
$10.07
4" SQUARE EXTENSION RINGS, 1-1/2" DEEP - WELDED W/CONDUIT KO'S
SKU: BEX-450
Model: BEX-450
$9.83
SKU: BEX-450
Model: BEX-450
$9.83
4" Square Bracketed Box, 1-1/2" Deep - Welded, W/Romex Clamps
SKU: 52151-MSR
Model: 52151-MSR
$12.14
SKU: 52151-MSR
Model: 52151-MSR
$12.14
4" Square Bracketed Box, 2-1/8" Deep - Welded, W/Conduit KO's
SKU: 52171-MS
Model: 52171-MS
$9.83
SKU: 52171-MS
Model: 52171-MS
$9.83
4" Square Box, 2-1/8" Deep - Welded, W/Mc/Bx Clamps
SKU: 52171-BX
Model: 52171-BX
$9.83
SKU: 52171-BX
Model: 52171-BX
$9.83
4" Square Extension Ring, 2-1/8" Deep - Welded, W/Conduit KO's
SKU: 53171-S
Model: 53171-S
$9.83
SKU: 53171-S
Model: 53171-S
$9.83
4" Square Angled Extension Ring, 2-1/8" Deep - Welded, No Knockouts
SKU: 53171-A45
Model: 53171-A45
$19.72
SKU: 53171-A45
Model: 53171-A45
$19.72
4 Square Blank Junction Box, 1-1/2 in. Deep, no Knockouts
SKU: 52151-BLNK
Model: 52151-BLNK
$17.09
SKU: 52151-BLNK
Model: 52151-BLNK
$17.09
4" Square Box, 2-1/8" Deep - Drawn, No Knockouts
SKU: 52171-BLNK
Model: 52171-BLNK
$19.49
SKU: 52171-BLNK
Model: 52171-BLNK
$19.49
4" Square Box, 1-1/2" Deep - Welded, W/Romex Clamps
SKU: 52151-R
Model: 52151-R
$7.28
SKU: 52151-R
Model: 52151-R
$7.28
4" Square Box, 2-1/8" Deep - Welded, W/Conduit KO's
SKU: 52171-3/4-1
Model: 52171-3/4-1
$7.43
SKU: 52171-3/4-1
Model: 52171-3/4-1
$7.43
4" Square Box, 1-1/2" Deep - Welded, W/Conduit KO's And Pigtail
SKU: 52151-SPT
Model: 52151-SPT
$5.67
SKU: 52151-SPT
Model: 52151-SPT
$5.67
4" Square Extension Ring, 1-1/2" Deep - Welded, W/Conduit KO's
SKU: 53151-S
Model: 53151-S
$4.37
SKU: 53151-S
Model: 53151-S
$4.37
4" Square Bracketed Box, 1-1/2" Deep - Welded, W/Conduit KO's
SKU: 52151-SWB
Model: 52151-SWB
$5.02
SKU: 52151-SWB
Model: 52151-SWB
$5.02
4" Square Bracketed Box, 2-1/8" Deep - Welded, W/Conduit KO's
SKU: 52171-AB
Model: 52171-AB
$8.76
SKU: 52171-AB
Model: 52171-AB
$8.76
4" Square Bracketed Box, 3-1/2" Deep - Welded, W/Conduit KO's
SKU: 52181-AB
Model: 52181-AB
$14.47
SKU: 52181-AB
Model: 52181-AB
$14.47
4" Square Bracketed Box, 2-1/8" Deep - Welded, W/Conduit KO's
SKU: 52171-3/4AB
Model: 52171-3/4AB
$9.01
SKU: 52171-3/4AB
Model: 52171-3/4AB
$9.01
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