HAND RAIL CAN BE MOUNTED TO EITHER SIDE…. More Stable and Durabel 】-This RV 4 Step stair is made of alloy heavy-gauge steel and black powder-coated finish for long-lasting durability, it is sturdier, wider, and significantly safer than standard pull out or folding steps, Supports up to 300 lbs， Eases boarding and exiting your RV or camper trailer. 【Size of RV Step Stair 】-This 4 step stair withTotal Height: 58.4",Top Platform Dimensions: 16",Stair Dimensions:42.7"x27 "x58.4",Stair Rise Increments: 7",Handrail Height from Platform: 30.4". 【Anti-slip Skid Tape】-and comes equipped with anti-slip skid tape to help you get in and out of your RV with safety and ease. 【Entry Assist Handrail】-Handrail attaches to either side of the stairs Added support when entering and exiting your RV.Wet and slippery, or nighttime conditions can make entering and exiting the RV challenging, The solid step entry assist handrail is designed to give added support and safety in these tricky situations.