Ruedamann Wheelchair Ramp, Durable Aluminum with 800lbs Load Capacity, Anti-Slip and Foldable Threshold Ramp for Electric Wheelchairs, Heavy Scooters, Curbs, Steps and Stairs

【Quality Material Wheelchair Ramp】The ramp is constructed with quality aluminum material. Aluminum alloy has high hardness, toughness and resilience, please use it with confidence. 【Ergonomic Dimensions with High Loading Bearing Capacity】 The ramp can bear the load capacity of 800lbs (400kg). Suitable for vehicles with width less than 30" (770mm). The ramp is equipped with the dimensions of 37.8L* 33.5W inches (96×85cm)  . It can height range between 3.6"-9"(9-22.5cm) with the best recommended height of 6"(15cm) for best use. The ramp is equipped with the dimensions of 50L* 33.5W inches (127×85cm) . It can height range between 4.8"-12"(12-30cm) with the best recommended height of 8"(20cm) for best use.   The ramp is equipped with the dimensions of 61.8L* 33.5W inches (157×85cm). It can height range between 5.1-14.8 inches (13-37.5cm) with the best recommended height of 10"(25cm) for best use.  The ramp is equipped with the dimensions of 74L* 33.5W inches (188×85cm) . It can height ran