Ensures safe basement model truck camper access. Works with all truck camper bumpers. Eliminates 14" vertical gap between bumper and entry door on basement model truck campers. Folds up and down in seconds for quick basement door access. Accommodates any rear door position (left, right and center). Easy bolt-on installation, powder-coated finish. glows for up to 10 hours. Single step with an 8" rise. Aircraft grade aluminum with a lifetime warranty. Made in the USA.