This caster kit is comprised of four, non-locking, 2 5/8″ Dia. casters, and two, easy-to-install, mounting/support brackets. This Model accommodates the 18.5″ deep 100/200 Series cabinets. The heavy-duty, 14-gauge CRS mounting/support brackets a…re 4″ wide and are designed to be affixed beneath the cabinetÕs bottom panel for front-to-back reinforcement. Brackets are .075″ thick and feature two 1/2″ downward flange on the inner edge, which provides additional structural support to the cabinet bottom. The zinc-plated swivel casters, which have an overall height of 3.75″, feature 2 5/8″ hard rubber tread wheels. Supports a load capacity of up to 1000 lbs. Brackets and casters mount directly to cabinets using supplied hardware. When in place, increases the cabinetÕs overall height by 1.75″. Brackets are finished in black.Product Features:Caster Kit for 18″ Deep 100 & 200 Series Racks1000 Lb. Load Capacity Allows Maximum Equipment InstallationCaster Kits Allow Racks to be Ganged Together