This is a 10 Inch VGBA Square Anti-Entrapment Suction Outlet Cover with a solid riser ring and mud frame. They are designed to replace standard 10 inch round covers that have a 9-1/2 inch center-to-center screw hole measurement.
The AquaStar 10 inch anti-entrapment cover is manufactured from superior UV-resistant engineered polymers. They include 316 stainless steel screws. They are Certified, Listed, and Labeled in conformance with APSP/ANSI/ICC-16 2017 and NSF/ANSI/CAN 50 standards. This is an update of the 2008 VGB certification. The Trademarked VGBA compliance button easily identifies this VGBA 2017 complaint cover from on deck and underwater.
The AquaStar VGBA Series of Anti-Entrapment Suction Outlets and Drains are compliant with the Virginia Graeme-Baker Pool and Spa Safety Act (ASME/ANSI A112.19.8-2007). Main drains should be replaced every five years. AquaStar offers online support with downloadable CAD files, Certificates, Installation, and more.