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The Hoffman Enclosures A664SUG is a galvanized steel pull box extender designed for Type 1 indoor applications. It measures 6.00 inches in width, 6.00 inches in depth, and 4.00 inches in height. The unit features a solid door with screw-cover access and includes plated steel screws for mounting to compatible pull boxes. It utilizes unique keyhole screw slots to facilitate installation.
Verify that the target application requires a Type 1 rated component suitable for indoor environments only. Confirm that the existing pull box dimensions match the 6x6 inch footprint of the A664SUG extender. Ensure compatibility with associated accessories before procurement. Check that the galvanized steel finish meets environmental requirements for the specific installation site.
Select this extender when additional volume or depth is required for a standard 6x6 inch pull box in an indoor setting. It serves as a direct extension rather than a standalone enclosure. Ensure the base pull box supports the weight and mounting configuration provided by the keyhole slots. This component is not rated for outdoor or wet locations.
This part belongs to the nVent Hoffman line of industrial enclosures and accessories. It is specifically categorized as a pull box extender within the Type 1 product family. The design focuses on extending existing infrastructure rather than providing primary protection against dust or water ingress beyond basic indoor standards.
No public confirmed substitute part numbers are available in the provided documentation.

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