Filling just a single rackspace, SSL sliding shelf extends 11-3/8in on nylon rollers slides. A telescopic rear support mounts to any rack (rear rack rail required in steel racks). The shelf itself is made with an attractive black laminate material. NOTE: Fits in racks with a minimum 15-1/8in from front to rear rail. 35 lbs weight capacity, with 11-3/8in extension nylon roller slides. Occupies one rackspace. Adjustable rear support to mount in most racks (15.1in to 23.9in range). Steel construction with black laminate shelf.