The multi-function 1143 cavity wall weep vent designed for cavity ventilation and reliable discharge of water from inside cavity walls. This could be over external lintels or wherever a cavity tray system is installed. The 1144 cavity wall weep vent extension offers a 50mm extension and connects directly onto the 1143 cavity wall weep vent. Use: For use in any situation where water must be discharged from an external wall, including: 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. Height Width Length Colour 65mm 10mm 100mm Various
