EZ Edge Transition Wheelchair Ramps can be easily installed on most surfaces including concrete, asphalt, wood, tile and marble. Simply choose the model closest to the height of the transition and the necessary width of access. EZ Edge ramps are most often used for door thresholds, sliding glass doors, entry ways, or any path of travel with a vertical barrier. Designed for durability and safety, installation is quick and easy. These ramps can withstand the harshest conditions and are perfect for either residential or commercial use and have no weight limitations!