Universal Motorhome Straight Back Ladder -Constructed of heavy gauge aluminum with a non-corrosive, bright dipped and anodized finish this ladder features non-slip, 2 inch ribbed steps and can easily be converted to a bumper mount ladder. It will fit just about any RV - any make, any model, any year, any vehicle and is easy and quick to mount as long as you have the proper blocking already in place on the RV. It comes with 4 support extensions that can be located anywhere on the ladder. The space between the ladder and the end of the hook is 9 inch. Approx. Dimensions: 12-3/4 inch W x 4-1/2 inch Tall.