FILTER return (exhaust "SC") from SEMI DIPPED Flange type, cleanable 60 micron wire mesh steel with Nitrile rubber gaskets (Baun-N) - Attack Outside Entrance (Above flange) from 3 / 4 "G - Outlet Pipe Flange Interior under 28mm - Capacity 060 lpm - Df = diameter at flange 086mm - Interase (2) Iv = 115mm Fixing screws M8 - Gauge 1 / 8 "G - Gasket on Flange - Maximum pressure 3 bar - Head Aluminium - galvanized steel.