This ladder resists movement on smooth surfaces and will not harm floors, making it a top choice for indoor use, Each of the 11 crosspieces contain 2 iron rods to keep the ladder flat and stationary; the nylon cover helps protect floors, 10 stepping areas measure 18"" each, Includes carry bag, Dimensions: 15"L x 20""W, Color: Black/White, SKU: PWSS506