4-RU roto molded plastic SKB-style rack. Very good condition. 16" depth from front to back rails. Covers seal tightly. Some scuffing here and there but the shell is intact. White tape on the handles to make for more comfortable transport. Front and back Gator style rack rails. Not the rattly SKB-style squares. Comes with enough bolts to mount two units at all four corners. 5mm bolts can be purchased at your local hardware if you need more. $60.00 OBO shipped to the 48. Paypal fees are included.