Terracotta Weep Vents Pack of 5 Low profile weep vents. Suitable for commercial and domestic use. Satisfies NHBC standards. British made 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. Other colours available in our shop. Use Any situation where water must be discharged from an external wall, e.g: 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 Less prone to inadvertent pointing-up than weep holes formed by simply leaving the perp joint open Integral front grille prevents entry of large nest building insects into the cavity when using product 1143 4mm wide front aperture prevents entry of large nest building insects into the cavity when using product TW1 Range of colours to blend with brick or mortar colour (products 1143 and TW1 only) Quality Satisfies all NHBC Standards 2006 Edition Manufactured to BS EN ISO 9001 : 2000 Complies with all relevant Building Regulations Meets all relevant British Standards