Once Your Bottom Step Measurements Are Taken According to the Instruction on the MEASURE Page, Use this Table to Place Your Order. All add-a-step™ Models Will Work with Most Rvs So Long as the Bottom Step Measurements Have Been Properly Determined. The Various General Application Guidelines Are Offered as a Quick, Simple Method of Selecting the Appropriate Model. The Deciding Factor of Which add-a-step™ Model to Order Should Always Be the Actual Measurements of the RV’s Bottom Step.
MODEL NO. FITS BOTTOM STEP TREAD SIZE