DOUBLE DESIGN: No need to use with another step ramp, simply unfold, put in place, and it's ready to use!ANTI-SLIP SURFACE: The aluminium ramp prevents wheels from rolling and slipping, with a high-rise rail on both sides for extra safety and precaution. PVC on the top to prevent wheels from moving when up.MADE FROM ALUMINIUM ALLOY: Anti-corrosive, strong and durable, the portable ramp provides extensive use both indoors and outdoors. FOLDABLE: With handle and lock and chain, it allows you to carry it easily from place to place.DOOR RAMP DIMENSIONS: 72W x 61Lcm. Folded: 61L x 39W x 9Tcm. The applicable height of this 61cm, ramp is 5-15cm, and the recommended height is 5-10cm. MAXIMUM LOAD WEIGHT 270kg.EASY TO SET UP AND USE. SUITABLE FOR WHEELCHAIRS, PUSHCHAIRS, ROLLATORS ETC. You can follow the steps to buy this aluminium ramp. Step 1. Measure the rise of your application. Step 2. Pick the proper ramp length based on your height of use.