The free area is approximately 14,133 mm2
Fan roof vents offers an attractive and long lasting method of adding ventilation to a building. Our unique lead vent registered design can be used to ventilate a roof or attach to mechanical extraction systems via flexible ducting. Leadworx fan vents offer a high quality finish preferred by many architects and builders across the UK. (These lead vents come with an optional stainless steel fly mesh).
Specification Sheet
