Open front desk with increased height range. MODEL SHAPE HEIGHT DESK 9A00 No U-Brace 24.5''-30.5'' Adj 18'' x 24'' 9A06 No U-Brace 24.5''-30.5'' Adj 20'' x 26'' 9B00 With U-Brace 24.5''-30.5'' Adj 18'' x 24'' 9B06 With U-Brace 24.5''-30.5'' Adj 20'' x 26''OPTIONSPermaTuff EdgePlywood Core Work SurfaceSolid Plastic Work SurfaceNon-Skid GlidesQ-Ball GlidesBlack Edge