This threshold ramp (3" tall x 17" wide x 34" long) is a lightweight and durable. It is a free-standing ramp made to help bridge the lips of doorways, sliding glass doors, and other landings. It is made of anodized aluminum so it can be used indoor and outdoors without corroding or rusting. Whatever your application may be, this threshold ramp can accommodate wheelchairs, walkers, and cane users and has a 600 pound weight capacity.