wheel chair ramp 4ft ,aluminium threhold ramp,Portable and Foldable, 600 Pound Capacity, Non-Skid W46527138Features Adjustable Height This wheelchair ramp features an adjustable height design, which enables it to accommodate a height range of 4 to 18 inches (10 45cm). It can be easily adjusted to meet your specific needs, allowing for safe, convenient access for wheelchairs, scooters, and walkers. Durable Construction Constructed from high quality aluminum alloy materials, this wheelchair ramp is both durable and sturdy, with a weight capacity of up to