as a kit, frost-proof when closed, medium-contact metal parts made of gunmetal, suitable for installation in new and existing external walls, universal installation length for all common installation depths, inner top part for quick opening, discharge rate 40 l/min (1 bar), installation depth min. 150 mm/max. 415 mm, with functional aerator for automatic emptying, with hose coupling for common plug-in systems, operating temperature max. 90 °C, EPDM seat seal, PN 16, dead space free