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Part #SIEM B44 BACKBOX 20"W X 44"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 44 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B44
35 in Stock. More available 12/25/2026
$251.67/EA
Part #SIEM B38 BACKBOX 20"W X 38"H X 5-3/4"D Siemens, B38, Panelboard Box, Type 1, 20 in Width, 5-3/4 in Depth, 38 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1 NEMA Rating
MFG #B38
3 available today. Please contact inside sales for delivery information.
$231.54/EA
Part #SIEM B68 BACKBOX 20"W X 68"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 68 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B68
4 in Stock. More available 11/09/2026
$338.40/EA
Part #SIEM B32 BACKBOX 20"W X 32"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 32 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B32
5 in Stock. More available 11/09/2026
$202.09/EA
Part #SIEM B62 BACKBOX 20"W X 62"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 62 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B62
Part #SIEM WP44 BACKBOX 20"W X 44"H X 5-3/4"D NEMA3R/12 Siemens Panelboard Enclosure, 5-3/4 in Width, 20 in D, Surface Mount, Steel, NEMA 3R/12
MFG #WP44
6 in Stock. More available 11/09/2026
$831.17/EA
Part #SIEM WP68 BACKBOX 20"W X 68"H X 5-3/4"D NEMA3R/12 Siemens Panelboard Enclosure, Low Voltage Unassembled, 68 in Length, 5-3/4 in Width, 20 in Depth, 16 ga Gauge, Surface Mounting, Steel, NEMA 3R/12 NEMA Rating
MFG #WP68
Part #SIEM B50 BACKBOX 20"W X 50"H X 5-3/4"D Siemens Panelboard Box, Type P1/P2, 20 in Width, 5-3/4 in Depth, 50 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1 NEMA Rating
MFG #B50
2 in Stock. More available 11/09/2026
$270.13/EA
Part #SIEM WP32 BACKBOX 20"W X 32"H X 5-3/4"D NEMA3R/12 WITH 3R COVER Siemens Enclosure Assembly, 20 in Width, 5-3/4 in Depth, 32 in Height, Surface Mounting, Steel, NEMA 3R/12
MFG #WP32
1 in Stock. More available 10/26/2026 and 11/09/2026
$696.10/EA
Part #SIEM WP38 WP 3R/12 ENCL ASSY-38HX5.75D, 20 WIDE Siemens Panelboard Enclosure, 5-3/4 in Width, 20 in D, Surface Mount, Steel, NEMA 3R/12
MFG #WP38
Part #SIEM B74 BACKBOX 20"W X 74"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 74 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B74
1 in Stock. More available 11/09/2026
$362.88/EA
Part #SIEM PB60 BACKBOX 32"W X 60"H X 10"D FOR P4 Siemens Panelboard Enclosure, Type P4, 60 in Length, 32 in Width, 10 in D, Surface Mount, NEMA 1 NEMA Rating
MFG #PB60
$4659.68/EA
Part #SIEM WP62 WP 3R/12 ENCL ASSY-62HX5.75D, 20 WIDE Siemens Panelboard Enclosure, Standard, 62 in Length, 7-3/4 in Width, 20 in Depth, Surface Mounting, Steel, NEMA 3R/12 NEMA Rating
MFG #WP62
Part #SIEM B56 BACKBOX 20"W X 56"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 56 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B56
Part #SIEM B44 BACKBOX 20"W X 44"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 44 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B44
35 in Stock. More available 12/25/2026
$251.67/EA
Part #SIEM B38 BACKBOX 20"W X 38"H X 5-3/4"D Siemens, B38, Panelboard Box, Type 1, 20 in Width, 5-3/4 in Depth, 38 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1 NEMA Rating
MFG #B38
3 available today. Please contact inside sales for delivery information.
$231.54/EA
Part #SIEM B68 BACKBOX 20"W X 68"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 68 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B68
4 in Stock. More available 11/09/2026
$338.40/EA
Part #SIEM B32 BACKBOX 20"W X 32"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 32 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B32
5 in Stock. More available 11/09/2026
$202.09/EA
Part #SIEM B62 BACKBOX 20"W X 62"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 62 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B62
Part #SIEM WP44 BACKBOX 20"W X 44"H X 5-3/4"D NEMA3R/12 Siemens Panelboard Enclosure, 5-3/4 in Width, 20 in D, Surface Mount, Steel, NEMA 3R/12
MFG #WP44
6 in Stock. More available 11/09/2026
$831.17/EA
Part #SIEM WP68 BACKBOX 20"W X 68"H X 5-3/4"D NEMA3R/12 Siemens Panelboard Enclosure, Low Voltage Unassembled, 68 in Length, 5-3/4 in Width, 20 in Depth, 16 ga Gauge, Surface Mounting, Steel, NEMA 3R/12 NEMA Rating
MFG #WP68
Part #SIEM B50 BACKBOX 20"W X 50"H X 5-3/4"D Siemens Panelboard Box, Type P1/P2, 20 in Width, 5-3/4 in Depth, 50 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1 NEMA Rating
MFG #B50
2 in Stock. More available 11/09/2026
$270.13/EA
Part #SIEM WP32 BACKBOX 20"W X 32"H X 5-3/4"D NEMA3R/12 WITH 3R COVER Siemens Enclosure Assembly, 20 in Width, 5-3/4 in Depth, 32 in Height, Surface Mounting, Steel, NEMA 3R/12
MFG #WP32
1 in Stock. More available 10/26/2026 and 11/09/2026
$696.10/EA
Part #SIEM WP38 WP 3R/12 ENCL ASSY-38HX5.75D, 20 WIDE Siemens Panelboard Enclosure, 5-3/4 in Width, 20 in D, Surface Mount, Steel, NEMA 3R/12
MFG #WP38
Part #SIEM B74 BACKBOX 20"W X 74"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 74 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B74
1 in Stock. More available 11/09/2026
$362.88/EA
Part #SIEM PB60 BACKBOX 32"W X 60"H X 10"D FOR P4 Siemens Panelboard Enclosure, Type P4, 60 in Length, 32 in Width, 10 in D, Surface Mount, NEMA 1 NEMA Rating
MFG #PB60
$4659.68/EA
Part #SIEM WP62 WP 3R/12 ENCL ASSY-62HX5.75D, 20 WIDE Siemens Panelboard Enclosure, Standard, 62 in Length, 7-3/4 in Width, 20 in Depth, Surface Mounting, Steel, NEMA 3R/12 NEMA Rating
MFG #WP62
Part #SIEM B56 BACKBOX 20"W X 56"H X 5-3/4"D Siemens Panelboard Box Assembly, Type P2, 20 in Width, 5-3/4 in Depth, 56 in Height, 16 ga Gauge, Surface Mounting, Steel, NEMA 1
MFG #B56