KELLY COMPUTER SUPPLIES-FOOTREST,ADJUSTABLE. Adjustable Rotating Footrest, Extra-Wide, 17 3/4 x 14 x 4", Black. Extra-wide adjustable footrest helps relieve lower back strain by elevating feet and helps correct posture, too. Massages bare feet with ridges, and adjusts to various angles and heights with a simple press of foot. Lightweight, nonskid base, with a low profile to match any home or office setting. Some assembly required. Width: 17 3/4 in; Height: 4 in; Depth: 14 in; Diameter: N/A.