For scooters and wheelchairs, the EZ-Access Threshold is a lightweight yet durable modular ramp designed for doorways, sliding glass doors, and raised landings. Threshold ramps may be used either one by itself or two combined to make entry and/or exit convenient and safe. Simply measure the height of the door entry and choose the correct size. Constructed of extruded, anodized aluminum that will not rust or corrode. Features a durable non-skid driving surface. Easy installation.