- Rounded edges with mounting holes in each corner
- 25mm deep rear spigot for ducting attachment.
The HSR range, allows air to be released by opening the Louvres and closing them when not in use. The Louvres are specially manufactured in a curved shape to assist in keeping the vent closed during wind, and drafts and prevent pets from entering the system.
The Gravity Louvre is made of UV resistant polypropylene plastic to withstand the Australian climate.