https://www.hayward.com/skimmaster-square-skimmer-2-socket-4-5-throat-open-line-sp1072s2sq.html
SkimMaster Square Skimmer - 2" Socket - 4.5" Throat (Open Line)
Non-corrosive SkimMaster surface skimmer with large capacity, adjustable collar, and automatic bypass for efficient debris removal in commercial pools.
squareskimmersocketthroatopen