TH1636 Size: 16" L x 36" W Features: -Designed for doorways. -Overall Product Weight: 3 lbs. -Weight Capacity: 600 lbs. -Anti-slip, high traction surfaces. -Hardware provided to secure ramp to surfaces. Product Type: -Threshold ramp. Country of Manufacture: -United States. Primary Material: -Metal. Outdoor Use: -Yes. Weight Capacity: -600 Pounds. -Material: Aluminum . Dimensions: Size 8" L - Overall Ramp Length - Front to Back: -.67 Feet. Size 10" L - Overall Width - Side to Side: -32". Size 10" L - Ramp Rise: -0.5". Size 10" L - Overall Ramp Length - Front to Back: -.83 Feet. Size 12" L - Overall Ramp Length - Front to Back: -1 Feet. Size 12" L - Ramp Rise: -0.75". Size 12" L - Overall Width - Side to Side: -32". Size 16" L - Overall Ramp Length - Front to Back: -1.33 Feet. Size 16" L - Ramp Rise: -1.5". Size 16" L - Overall Width - Side to Side: -32". Size 16" L x 36" W - Ramp Rise: -1.5". Size 24" L x 36" W - Overall Width - Side to Side: -36".