A wide variety of lock down colored lids and rings are available for Admiral Skimmers to coordinate with colored decking materials.Admiralâ„¢ skimmers offer a variety of base and throat options for nearly all plumbing and construction requirements. They are injection molded from durable, non-corrosive reinforced ABS, and feature exclusive tamper-proof lids. Choose between flap weir or exclusive circular weir for optimal water flow and superior surface skimming action.