The G826 Flat Roof Soffit Ventilator is designed for flat roof applications where an upright fixing is required and 25mm airflow is needed. The airflow passage consists of evenly spaced slots specifically sized to prohibit large insects gaining access but wide enough not to be blocked by debris, paint or water droplets. The Manthorpe Continuous Soffit Ventilator is designed for use with a traditional fascia board to provide roof ventilation. The UPVC strip is screwed on to the fascia and securely supports the soffit board which slots into the self-retaining mouth. Airflow is guaranteed through a series of evenly spaced slots, narrow enough to keep out large insects but large enough to prevent the vent from becoming blocked. Properties Free airflow: 25,000mm2 - equivalent to a continuous gap of 25mm. Material: uPVC. Weight: 6.4kg. Colour: brown. Length: 3.1m Application The G826 flat roof soffit ventilator (A) should be securely screwed to the soffit board through the fixing holes provided and butted up to the outer brick wall as shown. This is only one application and this product can be fitted in a wide variety of ways depending on soffit detail. Use in conjunction with other products from the Manthorpe range to provide a complete roof ventilation system.