This Refurbishment vent, also known as retrospective wall weeps or drill vents, from Timloc are intended for use in situations where ventilation is required in an external cavity wall and are perfect for venting timber framed buildings and external rendered wall finishes. Timloc refurbishment vents are the ideal solution for retrofitting when insufficient wall weeps have been installed or when existing weeps are blocked.The circular design of the Timloc refurbishment vent allows efficient ventilation flow with an equivalent area of 198mm2. Timloc refurbishment vents are available in a range of 3 different colours, natural, buff and terracotta, so you can blend them perfectly with your brick or mortar colour ensuring an aesthetically pleasing ventilation solution. The louvres are designed specifically to reduce wind-driven rain entry into the cavity and the integral front grille will stop large nest building insects from entering. Features & Benefits Circular design Quick and easy installation 3 colour options Equivalent area of 198mm2 For high- and low-level cavity wall ventilation Product Specification Size (hole): 25mm Length: 80mm Colour: Clear Box quantity: 50