The Ultra gizzmo skimmer freeze protection device uses the unique sealed air cushion of the gizzmo combined with a built in blowout tube. The choice of 1-1/2-inch or 2-inch tapered pipe threads allows the Ultra to accommodate most skimmers. The integral blowout tube provides the option to use the Ultra gizzmo as a suction line extension to clear the lines without lowering the water level in the pool. The Ultra gizzmo features double threads with rubber gaskets; a blowout tube with a rugged cap and generous lug style grips around the top for easy handling and convenience. For a professional fit; the gizzmo can be used with teflon tape. The gizzmo is designed for single season use.