Plastic laminated benchtop. This unit is custom built for all types of darkrooms and loading benches. The length, depth, and color are specifically matched to each installation. The top is 3/4 inch plywood with a 4-1/2 inch high (outside size), backsplash and end returns. Waste bin cutouts are bound with a welded stainless steel rim either 4"X16" or 7"X7" size. This unit is used on top of darkroom casement in X-ray processing rooms and is based on per foot of benchtop.