Constructed of hot-dipped galvanized steel. Assembles in minutes. Use Arrow floor frame kit over your base of dirt, gravel, or grass. Floor frame offers an easy way to construct a raised floor, keeping stored items off the ground. Floor frame must be square and level to base material. Floor frame is installed after your shed is completely assembled. Floor frame beams slot easily into frame of shed providing an ideal framework for finishing with 5/8" exterior-grade plywood (not included). For use with 10' x 12' and 10' x 14' sheds.