The ROKU® pipe collar AWM II or AWM II Light up to 240 minutes fire rating for combustible pipes up to pipe outside diameter 400 mm consists of a solid metal sleeve which is equipped with several layers of the high performance intumescent material „ROKU® Strip“. In the event of a fire, the intumescent material expands with a high pressure and thus seals the opening hermetically against flames and smoke. For wall installations one pipe collar on each side of the wall must be provided, for floor installations one pipe collar on the underside of the floor.


- Plastic pipes up to 400 mm pipe outside diameter in
concrete / masonry walls, floors and dry wall partitions

- For insulated or non-insulated combustible pipes

- Acoustic insulation of PE 4 mm thick

- Synthetic rubber up to maximum 43 mm thickness

- Low height of the pipe collars also for bigger

- Zero distance possible between close pipes

- To a certain extend, pipe collars may be three
dimensions bigger than the pipe outside diameter

- Also in combination with ROKU® MFS System