Whirly Bird Roof Ventilator 300mm
Whirly Bird Roof Ventilator 300mm Alluminium to be installed on your roof to remove excessive heat in summer and moisture in winter. Cooling and ventilation: the primary benefit of turbine ventilators is that they efficiently remove hot, stale and polluted air from buildings in which attic-air can be heated up to 65°, this allows the air to be replaced with cool fresh air from outdoors. Cost effective: turbine ventilators require no maintenance and no electricity to run. In winter, ven