Folds for easy storage Using two--front and rear or on both sides--makes RV rock solid Sets up in minutes, no tools needed Fits frames 14"H to 28"H. Comes with ratchet strap and storage bag. I have three of these available. One storage bag is ripped but usable. Sells new on Amazon for $62.  Made by Valterra.  Price is $25.00 each.