Compatible with all 19 racks and cabinets to hold various IT, network and other equipment. Dimensions: W 19" x D 10" x H 2U per shelf ; 2 Shelves as set This Vented Center Weighted Mounting Rack Shelf fits the mounting posts in different deepth from 75 mm to 125mm. Max Weight Capacity: 110 Pounds; Center weighted. Slotted Venting to Improve Air flow and Help Prevent Overheating of Your Equipment