Skimmers In white ABS with silent wier flap and flow regulation plug. 1 1/2″ female – 2″ male suction connections. Ø 50 mm solvent connection also provided. Overflow connection Ø 40 mm. Basket secured to base with bayonet fixing. We recommend installing one skimmer for every 25 m2 of water surface area. All exposed skimmer parts are UV resistant. Recommended flow 5 m3/h.