10 x Blue / Black Weep Vents Available in a range of colours in our shop Used for discharging water from external walls of lintels Designed to fit in with blue engineering bricks British Made Suitable for commercial and domestic use. Satisfies NHBC Standards Manufactured to BS EN ISO 9001 Dimensions 100mm x 64mm x 10mm The product can be slotted between two bricks and mortared into position. It provides an unobtrusive ventilation point for the cavity behind. The vent has a baffled grille to prevent the ingress of driving rain and wind whilst incorporating an insect grille and drip lip. This grille is sized to keep out large insects but is wide enough that it will not be blocked by debris, paint or water droplets. Technical specification Any situation where water must be discharged from an external wall. Ventilating cavity voids At ground floor slab level Within cavity tray systems Over external lintels Where a cavity must be ventilated On external walls - 100mm or more in thickness - built from brick, block or stone. Features & benefits Purpose made and pre-formed to guarantee reliable discharge of water Free vent area 165mm2 Quality Satisfies all NHBC Standards 2008 Edition Manufactured to BS EN ISO 9001 : 2008 Complies with all relevant Building Regulations Meets all relevant British Standards Material & colour choice injection moulded in UV stabilised polypropylene