Construction
- Cowls are of galvanised steel
- Ember protection - bronze mesh with max. 2mm aperture
Special Note
Construction of buildings in bushfire prone areas
AS3959:2009, clause 6.6.5(b) "Roof penetrations" states: Openings in vented roof lights, roof ventilators or vent pipes shall be fitted with ember guards made from a mesh or perforated sheet with a maximum aperture of 2mm, made of corrosion-resistant steel, bronze or aluminium.
| A |
B |
C | D |
| 195 | 153 | 810 | 445 |
| 195 | 153 | 950 | 445 |
