The Athearn HO Scale 5521 Railbox 50 Ft. Sliding Door Box Car is a pre-built model train accessory designed for model railroads and trains enthusiasts. This unassembled box car features a yellow color with the corporate roadname Railbox, making it a realistic addition to any train layout. The plastic construction and 1:87 scale ensure durability and accuracy, perfect for collectors and hobbyists looking to expand their collection with a high-quality piece. UNASSEMBELED