The Onduline Eaves Ventilator Strips are 1000mm long. They are designed to allow airflow into the roof whilst protecting against any insects, debris and birds getting into the roof space. These roof membranes can be installed to many types of roof in both new-build construction and renovation: garden sheds, summerhouse, garden office or gazebo. Onduline Eaves Ventilator Strips are used to allow ventilation into the roof space of an outbuilding or DIY project whilst preventing the infiltration of birds and large insects into the eaves. They are secured by using nailing with galvanised round headed nails, such as the Onduline circular nails. Height: 75 mm Length: 1000 mm Thickness: 3 mm Width: 20 mm Usage: universal ventilator strip to be used with Onduline, Corrapol, Coroline bitumen roofing sheets or any other corrugated roofing sheets