54" wide x 27" tall x 12" deep. One 36" opening with two doors and one 18" opening with one door. Diamond Plate 3 Shelf Adjustable Enclosed Wall Mount Cabinet. Garage Fabricators cabinets are fabricated of powdercoated steel and aluminum. These cabinets are manufactured to be completely modular and adjustable. Each shelf can be adjusted within 2.25" in height. You can add extra shelves, take them out or integrate dividers.