Rack mount adjustable shelf mounts to front surface of front and back rack angles. Shelf is made of painted 14 gauge steel and the adjustable support brackets are clear-plated 12 gauge steel. Adjustable to fit multiple-depth enclosures or rack angle placement. Both solid and vented models available. Fits 19 or 23 inch rack spacing. Requires only 1U of rack space. Shelf has RAL 7035 light-grey textured or RAL 9005 black textured polyester powder paint finish.