Tripp Lite Smart rack shelf accommodates tower units, monitors and other equipment. Shelf features cold rolled steel with black finish and 25. 5" of shelf depth. Smartrack Heavy Duty Fixed Shelf. Material: Cold-rolled steel. Dimensions: 1. 73"(H) x 19"(W) x 26. 1"(D). Maximum weight capacity: 250 lbs. Black. Designed for 4 post rack mounting. Accommodates tower units, monitors, and other equipment. Includes shelf and mounting hardware. Weight: 16. 5 lbs. Warranty: 5 years limited. Operating temperature: 32 - 104 deg F. Operating humidity range: 10 - 90%, relative, non-condensing. Tripp Lite Smart rack shelf is designed for 4 post rack mounting and withstands 250 lb. of weight capacity.