Threshold Ramp 2 All threshold ramps are: For scooters and wheelchairs to make doorways sliding glass doors and raised landings easy to travel over * Easily installed * Made of extruded anodized aluminum that will not rust or corrode * 600 Lbs. weight capacity * Limit of use: 1 3/4 to 2 1/4 * Lengths: 12 * Used for sliding doors thresholds raised landings etc. * Dimensions: 12 L X 34 W