The SN3540 Series has a unique "H" design with matching wood panels on each side. Large non-adjustable shelf holds additional material. Reading surface has a 1-1/2 lip to help keep papers in place. Wood side panels are made from red oak with choice of 3 colors: MO (Medium Oak), WT (Walnut), MH (Mahogany). Custom etched or vinyl logos available at an additional cost.