I just wanted to inform you of the Virginia Graeme Baker Act. This federal law which carries a fine of up to 15 million fine and is enforced by the Consumer Protection Agency? requires that all main drain or drains be replaced with the new approved versions. Also on a commercial pool/ spa which is what most of you have, requires either 2 main drains at least 3 feet apart or a single main drain with a suction release vacuum system. The law requires you to be in compliance by Dec 19, 2008