All exposed skimmer parts are UV resistant. Recommended flow 5000 l/h. 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.