Uncategorized Brown Wall Vent - Can replace standard terracotta 230 x 160 vent and give 4 times the ventilation 13,400 sq mm of ventilation per vent to replace 2 standard bricks 2 high x 1 long, this high flow vent gives 13,400 sq mm of ventilation. Wall vent is intake ventilation unit for constant ventilation and designed for supplying of fresh air to residential or nonresidential premises.
