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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
1 in Stock. More available 01/11/2026
$799.01 per EA (1) / 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
6 available today. Please contact inside sales for delivery information.
$194.18 per EA (1) / 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
4 in Stock. More available 01/16/2026
$669.13 per EA (1) / 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 12/20/2025 and 01/05/2026
$348.79 per ea (1) / 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 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
1 in Stock. More available 01/07/2026
$990.71 per EA (1) / 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
8 in Stock. More available 01/25/2026
$259.74 per EA (1) / 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 01/30/2026
$733.45 per EA (1) / 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
7 available today. Please contact inside sales for delivery information.
$222.64 per EA (1) / 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 12/20/2025 and 01/05/2026
$325.28 per EA (1) / 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
17 in Stock. More available 12/20/2025 and 02/20/2026
$241.99 per EA (1) / 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
2 in Stock. More available 01/05/2026
$301.79 per EA (1) / EA
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
1 in Stock. More available 01/11/2026
$799.01 per EA (1) / 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
6 available today. Please contact inside sales for delivery information.
$194.18 per EA (1) / 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
4 in Stock. More available 01/16/2026
$669.13 per EA (1) / 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 12/20/2025 and 01/05/2026
$348.79 per ea (1) / 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 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
1 in Stock. More available 01/07/2026
$990.71 per EA (1) / 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
8 in Stock. More available 01/25/2026
$259.74 per EA (1) / 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 01/30/2026
$733.45 per EA (1) / 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
7 available today. Please contact inside sales for delivery information.
$222.64 per EA (1) / 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 12/20/2025 and 01/05/2026
$325.28 per EA (1) / 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
17 in Stock. More available 12/20/2025 and 02/20/2026
$241.99 per EA (1) / 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
2 in Stock. More available 01/05/2026
$301.79 per EA (1) / EA
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












