Astralpool Liner returns inlet MULTIFLOW SYSTEM The eyeball has been marked with a series of “knock-outs” at 14, 20, and 25, enabling the required flow to be selected at the time of installation. Recommended max flow 4 m/sec., complies with UNE 13451-1: Ø 14 mm = 30 m3/h, Ø 20 mm = 4,5 m3/h, Ø 25 mm = 7 m3/h For liner pools, white ABS plastic with gaskets and screws. External thread of 2″, Ø 50 mm solvent internal. Installation with wall conduits 15662 or 15663 is recommended. Item available in White, Beige, Light Gray and Anthracite colors.