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The Hoffman Enclosures A12104SUG is a screw-cover pull box extender designed for Type 1 indoor environments. Constructed from galvanized steel, it measures 12 inches in height, 10 inches in width, and 4 inches in depth (305mm x 254mm x 102mm). This accessory extends existing pull boxes to accommodate additional wiring or components without requiring custom fabrication.
Verify that the base pull box dimensions match the required 12x10 inch configuration before procurement. Confirm that the application environment remains indoors, as this unit lacks weatherproofing ratings. Ensure compatibility with existing screw-cover mounting hardware to maintain structural integrity during installation.
Select this extender when a standard pull box requires increased depth for complex wiring scenarios. It serves as a direct replacement for custom-sized boxes, simplifying inventory management. Consider galvanized steel durability for non-harsh indoor conditions where stainless steel is unnecessary.
This component belongs to the Hoffman Enclosures pull box accessory line, specifically engineered to modify standard NEMA Type 1 enclosures. It enables modular expansion of electrical distribution points within controlled indoor facilities, supporting standardized industrial enclosure ecosystems.
No public substitute part numbers are documented for this specific extender model. Verify dimensional compatibility with existing base units rather than seeking direct cross-references.

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