HMG Ultamid 4 Insert with DCF11 FloorHMG Ultamid 4 Insert with DCF11 Floor is designed as four wall UltaMid 4 Insert with no see um mesh for passionate multi sport adventurers who want to keep the bugs at bay and their ultralight, high tech gear totally dry. The 100% waterproof DCF11 bathtub floor provides significant protection from storms, and morning condensation is minimized by the design. Inserts are smaller than the perimeter of the UltaMid, so the netting never touches the walls.