Easyvent trickle vents are UV stable, easy to install, and come in a complete set with screw cap covers to hide the screw heads. Available in three sizes: 2000, 3000 and 4000 to ensure each inhabited room has the correct amount of ventilation. The stocked colour options include White and Bright White, Anthracite, Black, Cream, Brown and Golden Oak. Drawings for each vent are available, and you can access and download them by clicking on the vent details and selecting the required drawing or routing diagram from the datasheets section. Some of the vents are shown in this short video. Be sure to check the technical data sheet for each vent to see their performance regarding sound insulation, air permeability, watertightness and their EA rating, and remember that this will depend on the routing also.