To replace 4 Standard Bricks 2 High x 2 Long, this high flow Passive (Non Powered) Vent gives a massive 23,000 Sq mm of ventilation. When installed to give good cross flow will improve sub-floor moisture and help reduce Fungi & Mould, Timber Decay, Reduces Risk of termite attack & cupping of timber floors.Decorative cement surround with corrosion resistant full brass mesh insert. The 11mmx11mm hole size keeps vermin out.

• Replaces 4 Stanard Bricks 2 wide x 2 high
• Attractive coloured cement surround with corrosion resistant Brass Mesh Insert
• Increasing sub-floor ventilation can help with musty smells and mould inside
• Good cross flow ventilation can help reduce cupping floor boards and timber decay
• 23,000 Sq mm of ventilation per vent