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The Hoffman E4WRS19FM45U is a 4-post open frame rack constructed from aluminum with a white polyester powder coat finish. It measures 84 inches in height and 20.25 inches in width, providing 45U of vertical mounting space. The unit features square hole mounting patterns compatible with 19-inch equipment. Depth is adjustable from 450 mm to 1050 mm (17.7 to 41.3 inches) in 25-mm increments. It supports a load capacity of 2400 lb and includes #12-24 rack mounting screws for tapped hole models.
Verify that the specific order matches the E4WRS19FM45U designation to ensure correct depth adjustment mechanism and square hole configuration. Confirm UL 2416 listing requirements are met for the intended installation environment. Check if ganging capabilities are required for multi-rack setups. Ensure included hardware specifications align with existing mounting standards.
Select this model when fixed-depth racks are insufficient for varying cable management needs. The adjustable depth feature accommodates diverse component depths without requiring multiple inventory SKUs. Aluminum material offers weight reduction compared to steel alternatives while maintaining structural integrity. Verify clearance dimensions against available floor space before procurement.
This component belongs to the nVent Hoffman open frame rack series, designed for modular electrical enclosure systems. It serves as a structural backbone for assembling custom panels. The product line emphasizes standardized mounting interfaces to simplify integration with various industrial components. It represents a solution for organized equipment deployment in constrained spaces.
No public confirmed substitute part numbers are available for direct replacement.

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