Packed: 10

• Designed to provide retrospective ventilation to cavity walls where no or an insufficient amount of weep vents have been used
• Can also be used to ventilate rendered wall where standard weep vents are notoriously difficult to detail
• Installed in a 25mm diameter drilled hole
• Provides 260mm ventilation airflow per unit
• Louvred chevron grill to help protect against wind driven rain & insect ingress
• The external flange covers any damage to the substrate caused by the drilling
• Drip rib ensures clean moisture run off
• Tube ribs ensure easy lead in to the hole and help retain the vent in position
• Regulations – BS 5250:2011 Control of Condensation in Building, Building Regulations 2000: 5.5, Scottish Building Regulations 2007: 3.10.6, NHBC Standards 6.1 D6 and NHBC Standards 6.2 D4
• Size 80mm x 25mm diameter
• Also available in terracotta and clear