UWS Gloss Black Aluminum 36" Single-Door Underbody Tool Box Model TBUB-36-BLKUWS Gloss Black Aluminum 36" Single Door Underbody Tool Box Model TBUB 36 BLK UWS underbody tool boxes provide unbeatable storage and security for your items under the bed of your truck or trailer. The box conveniently mounts underneath the bed of a flatbed truck, dump truck or trailer, leaving more space on top of the bed for other cargo. Each box features a corrosion resistant aluminum construction, heavy duty cable door supports and a stainless