Take the hassle out of owning a pool with Letros Automatic Water Filler, the latest in automatic pool and spa water level controls. The Letro Auto-Fill is easy to install and includes predrilled mounting flanges that allow the unit to be leveled and attached to rebar stakes before the deck crew shows up. It measures a mere 7 inches in diameter for versatility of installation and includes matching rings or lids in white, gray, and tan. Automatic Water Fillers are equipped with all brass fill valves for durability and dependability.