Mobile bases include casters and extend beyond the front and rear of 600- and 800-mm wide modular enclosures to provide enhanced stability. The front and rear top surfaces of the base are trimmed with 3-mm thick black rubber mats. Four non-locking casters provide a maximum load-bearing capacity of 1000 lb. (453.6 kg). Available as standard product for 600- and 800-mm wide frames. The base fastens to the underside of the frame and provides integral mounting of furnished casters. Casters and mounting hardware are furnished. Exercise care when using casters to move the enclosure. Avoid tipping and damage to the enclosure and its contents by slowly moving the enclosure on its casters across smooth, flat flooring. Avoid large cracks, floor displacement, seams, gravel and any other obstruction. Never use casters while transporting an enclosure by truck on roadways.