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The Hoffman A18R66NK is a Type 3R commercial enclosure constructed from 16-gauge steel with a galvanized, polyester powder-coated finish in ANSI 61 Gray. It measures 18 inches in height, 6 inches in width, and 6 inches in depth. The unit features a slip-on cover secured by screws at the bottom edge and includes a drip shield on top. It is padlockable and designed for outdoor wiring junction applications.
Verify that the specific order matches the A18R66NK part number to ensure correct dimensions and gauge thickness. Confirm the NEMA 3R rating requirement aligns with the installation environment. Check for any specific mounting hole configurations or knockout requirements before finalizing the purchase order.
Select this model when a compact, weather-resistant enclosure is needed for outdoor use. The 18x6x6 inch size fits small components. Ensure the application does not require higher ingress protection than Type 3R offers. Verify that 16-gauge steel strength meets mechanical load expectations.
This component belongs to the Hoffman A-Series commercial enclosures. It is manufactured by nVent Hoffman. The product line focuses on standard industrial enclosures for general-purpose electrical protection. The NK suffix typically denotes specific finish or hardware variations within the series.
No public confirmed substitute part numbers are available in the provided documentation. Cross-reference with manufacturer catalogs for equivalent dimensional or rating specifications if direct replacement is required.

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