4 ft. x 36" Mobility ramp for power scooters, wheelchairs, walkers and rollators High traction slip-resistant surface for optimal grip in any weather condition Strong 800 lb maximum capacity Great for accessing raised surfaces and thresholds Portable one-piece design made with durable aluminum construction Easily access raised surfaces, steps, and thresholds with Silver Spring aluminum wheelchair ramps. Designed for powerchairs, wheelchairs, walkers and rollators, the 4 foot x 36" Silver Spring mobility ramp features a high traction, slip-resistant grip tape surface and a large 800 lb capacity for optimal stability and support in any weather condition. The one-piece solid wheelchair ramp is a helpful solution for conveniently accessing 8" residential surfaces, or 4" high commercial surfaces, safely with a mobility device or by foot. Each wheelchair ramp includes raised safety side rails to help keep equipment centered during use, and pre-drilled holes for optional permanent installation to the raised surface. Made with durable all-aluminum construction for years of reliable rust-free use.