Built-in Closet with Walnut Floor Materials: Birch Veneered Formaldehyde Free Plywood, Solid Birch, 3/8" x 5" Walnut Engineered Flooring, White Pine Moldings, Blum Concealed Soft Close Drawer Slides, Heavy Duty Chrome Plated Steel Closet Rods and a Low VOC Urethane Finish. This closet retrofit really gave its owner some sleek storage with a smooth and clean modern look. A chest of dovetailed drawers with smooth action slides provides plenty of space for folded clothing.