A door is a hinged or otherwise movable panel that allows access to an enclosure, cabinet, bin, or other cavity or container. A door assembly comprises the components that work in tandem to allow the door to function properly. Doors may be hinged and swing open and closed, or they may slide within a frame. Other uses are as a spacer, spring Belleville washer, wave washer, wear pad, preload indicating device, locking device, and to reduce vibration rubber washer. Spring washers, which have axial flexibility are used to prevent fastening or loosening due to vibrations. Locking lock washers prevent fastening or loosening by preventing unscrewing rotation of the fastening device. Features. Door Washer. Made with high quality material. Set of 2Specifications. Length 2.95 in / 7.49 cm. Width 4.25 in / 10.80 cm. Height 0.45 in / 1.14 cm