To Replace 2 standard Bricks 2 high x 1 long, this high flow Vent gives 13,400 Sq mm of ventilation. This can replace standard terracotta vents of the same size and increase ventilation by around 4 times. When set out in good cross flow pattern can improve sub-floor ventilation and help reduce fungi & mould, timber decay, risk of termite attack & cupping of timber floors.

Decorative cement surround with corrosion resistant full brass mesh insert. The 11mm x 11mm mesh hole size keeps vermin out.

• Replaces 2 Standard Bricks 1 Wide x 2 High
• Can replace standard Terracotta 230 x 160 vent and give 4 times the ventilation
• Increasing Sub-floor Ventilation can help with musty smells and mould inside
• Good Cross flow ventilation can help reduce cupping of floor boards & Timber Decay
• 13,400 sq mm of ventilation per vent