For concrete or vinyl/fiberglass pools, Hayward U.L. listed suction outlets are available in a wide range of styles and sizes to satisfy any installation requirement. Whether you install frame and grates, for residential or commercial pools, or sump-type drains, Hayward suction outlets set the standard in quality and value.
Hayward SP Series Suction Outlet Assemblies comply with provisions of the ASME/ANSI A112.19.8M-1987 standard.

Hayward WG Series Suction Outlet Assemblies comply with provisions of the ASME/ANSI A112.19.8M-1987, 2007 standards

Failure to follow instructions can cause severe injury and/or death.
A minimum of two functioning suction outlets per pump must be installed. Suction outlets in the same plane (i.e. floor or wall), must be installed a minimum of three feet (3') [1 meter] apart, as measured from pipe center to pipe center.
Dual suction fittings shall be placed in such locations and distances to avoid "dual blockage" by a user.
Dual suction fittings shall not be located on seating areas or on the backrest for such seating areas.
The maximum system flow rate shall not exceed the flow rating of any listed (per ASME/ANSI A112.19.8M-1987) suction outlet cover installed.
Never use Pool or Spa if any suction outlet component is damaged, broken, cracked, missing, or not securely attached.
Replace damaged, broken, cracked, missing or not securely attached suction outlet components immediately.
In addition, two or more suction outlets per pump installed in accordance with latest APSP, IAF Standards and CPSC guidelines, follow all National, State and Local codes applicable