"With an innovative adjustable design, the 1' EZ-ACCESS® TRANSITIONS® Aluminum Threshold Ramp is especially helpful for locations where the surface may not be level. Manufactured from high-strength, lightweight aluminum, this ramp has a 700 lb. weight capacity and is extruded with texture for better traction. The self-supporting, adjustable legs have pivoting footpads to accommodate varying angles and surface types, as well as rises from 1.375"" to 2.75"" high"