The filters are designed according to the specifications of DIN EN 13443-1 and DIN 19628 and are intended for installation in the drinking water installation according to DIN EN 806-2 (installation directly after the water meter system). Grünbeck Vorfilter GB Feinfilter BOXER KDX DN 20 (1 St Drinking Water Backwash Filter Grünbeck Fine Filter Boxer (Water Filter) KDX - DN 20 (3/4 Inch) - For Filtration Of Drinking Drinking Water Filter Grünbeck Boxer backwash filter 101510 Nominal pressure PN 16 Water temperature max. 30 °C Filter fineness according to DIN EN-13443- 2000 Operating pressure 2-16 bar made of high-strength engineering plastic aerodynamically optimized integrated 12-part da The adjustment of the reprint on the removal side only works when used in the pressure area. Grünbeck Rückspülfilter BOXER RX DN 20 - Art.101510 – GmbH The Boxer RX backwash filters are designed for filtration of drinking water.