Selve knækleddet er forsynet med en ekstra kraftig 4-punkts lås  Quad-Lock

som sikrer stabilitet

The screw and nut in the joint are completely flush with the surface of the pliers

ved at tage børsten ud af tagrenden og banke den

Med Nippel

Tagbrønd Ø50x600 mm Alkorplan/Alkorplan F mørk O-ring Ø50x8 mm Sikkerhedshjelm Selve knækleddet er forsynet medRoof well vertical Dimension: 50x600 mm mm O ring: 50x8 mm Material tube protection ring: Acid resistant steel AISI 316 Flange material: Stainless steel AISI 304 Membrane type: Alkorplan Alkorplan F dark Certification: TV Rheinland according to DS EN 1253 Roof drain is used for vertical drainage of a flat roof, with roofing felt or roofing foil. The roof well ensures a watertight connection between the roof surface and the downpipe under the roof