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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
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
8 in Stock. More available 03/13/2026
$194.18/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
3 in Stock. More available 03/12/2026
$669.13/EA
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 02/18/2026 and 03/09/2026
$348.79/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
3 in Stock. More available 03/21/2026
$1056.28/EA
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
5 in Stock. More available 03/27/2026
$259.74/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
7 in Stock. More available 03/17/2026
$733.45/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
6 in Stock. More available 03/09/2026
$222.64/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
5 in Stock. More available 02/18/2026 and 03/09/2026
$325.28/EA
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
21 available today. Please contact inside sales for delivery information.
$241.99/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
1 in Stock. More available 04/01/2026
$301.79/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 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
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
8 in Stock. More available 03/13/2026
$194.18/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
3 in Stock. More available 03/12/2026
$669.13/EA
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 02/18/2026 and 03/09/2026
$348.79/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
3 in Stock. More available 03/21/2026
$1056.28/EA
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
5 in Stock. More available 03/27/2026
$259.74/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
7 in Stock. More available 03/17/2026
$733.45/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
6 in Stock. More available 03/09/2026
$222.64/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
5 in Stock. More available 02/18/2026 and 03/09/2026
$325.28/EA
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
21 available today. Please contact inside sales for delivery information.
$241.99/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
1 in Stock. More available 04/01/2026
$301.79/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