Roof vent K12

Gravitation vent harnesses the wind power to support the draught in air-ducts. Thanks to its construction it ensures intensive ventilation, even by minimum wind speed. The vents create a completely effective protection from outside air blow into the air-duct, and from rain water and snow. Designed to cover ventilation air-ducts. The given diameter of roof vents is the outer dimension adjusted to be mounted on the bare end of the pipe. catalogue no.: K12 type: gravitation vent dimension: Ø160/H420mm package: 1pcs./set