Hayward Commercial Swimming Pool Equipment Hayward Swimming Pool Main Drains Select Model # SP1051AVPAK2 -- Main Drain – Concrete (1-1/2” Side Outlet) -- $67.45 SP1052AVPAK2 -- Main Drain – Concrete (2” Side Outlet) -- $67.45 SP1048E -- Anti-Vortex Cover Plate (Domed) -- $16.33 Quantity: