nVent Hoffman P2APBVC18 Vented Plinth Base Cover The Vented Plinth Base Covers replace the traditional solid plinth base covers that mount width-wise across the front and rear of the enclosure. Vented covers allow air to enter the enclosure from below, and are used in conjunction with the Vented Gland Plate. These covers are RAL 9005 black, polyester powder paint, and include all necessary mounting hardware. Please note that a standard 100mm Solid Plinth Base must be ordered separately, as Vented Plinth Base Covers are replacements for the front and rear covers only. Vented Gland Plate also sold separately, but required for successful air passage.