The FlowStar Skimmer with Flush Face and 4" Extension is designed for commercial and residential use with a flow rate of 15 GPM minimum to 90 GPM maximum. It features an adjustable collar, new weir clip lock, and a large self-contained basket with a lock-in feature to prevent floating. Underwater dampers on the faceplate help reduce weir noise in windy conditions. The upper housing is made from high-strength engineered polymer, and the lower unit is heavy-duty PVC with no transitional glue required. Plumbing includes 2-1/2" outside slip and 2" inside slip connections, 2" threads for pressure testing, and a 1" overflow/fill line knock-out. Rebar cutouts and pre-drilled tie wire holes are included.