Retrofit Flow Sync™ Adjustable Floor Return returns water evenly in all directions around the fitting to existing pools through a flush ABS design. It improves flow distribution and minimizes floor discoloration. Ideal for sun shelves and beach entries. Flow rate adjusts from 1 to 83 GPM using the optional Hand Tool (FSTW10), a pole mounted Deck Tool (FSTW), or a standard 3/8 in. hex key. Flow Sync™ meets NSF 50 standards for quality and safety.