Schlüter-KERDI-KM Prefabricated waterproofing collars
In addition to the classic waterproofing membranes from the Schlüter-KERDI series, Schlüter also offers helpful accessory sets like KERDI-KM. Each of these sets, which are tailored to your needs, contains five waterproofing collars for 25 mm pipe penetrations in accordance with DIN 18534.