Slide-A-Shelf AMC-PL-2TT-12W18D20H-F Baltic Birch Adjustable 2 Tier Tower with Full Extension, 12" x 18" x 20" Durable and easy-to-clean surfaces, wrap-around 7 ply Baltic birch sides, with a tough uv cured poly-urethane finish; manufactured in the usa Vertically adjustable levels for creating storage space Metal full extension ball bearing slide rails rated at 100 lbs.; no plastic components You will never again have to bend or stoop or get on your hands and knees to reach items you store Easy to assemble and install with just a screwdriver; all hardware is included