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The Hoffman A20D168 is a steel enclosure designed for hazardous locations, conforming to NEMA Type 9 and IP60 standards. It features ANSI 61 Gray polyester powder coating over a pretreated surface. The unit measures 20.00 inches in length, 16.00 inches in width, and 8.00 inches in depth. It holds UL and CSA approvals for use in Class II Division 1 and 2 environments as defined in Article 500 of the National Electrical Code.
Verify that the specific installation environment matches Class II Division 1 or 2 requirements before procurement. Confirm that the 20x16x8 inch dimensions fit the designated space. Ensure compatibility with existing conduit entries and internal mounting configurations. Check for any local code amendments regarding NEMA Type 9 enclosures in your jurisdiction.
Select this model when protection against combustible dusts is required. The steel construction provides robust physical protection. The gray finish offers corrosion resistance suitable for industrial settings. Consider the weight of approximately 33.9 lbs during installation planning. Verify that the UL and CSA listings meet the authority having jurisdiction requirements.
This enclosure belongs to the Hoffman A9 Series, which is specifically engineered for hazardous area applications. The series provides standardized sizes for common industrial control needs. The A20D168 variant utilizes a split-side design for easier access to internal components. It is part of a broader range of nVent Hoffman safety products.
No direct public substitute part numbers are confirmed for this specific model. When replacing, ensure the new unit maintains NEMA Type 9 rating and identical external dimensions. Verify that the replacement also carries current UL and CSA certifications for the same hazardous location classes.

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