W3 Filters are made with the finest materials. They fit perfectly within the duct-mounted air filter box to filter out the air circulating within the duct. The W3 filters capture particulates as air is moved through the blower and pushed out through ducts. It effectively filters out contaminants and ensures that they do not build up and interfere with HVAC operation. W3 filters enable the smooth function of the ducting and the HVAC by extension. Key Features: Made with top-quality materials Filters out contaminants Used with duct-mounted air filter boxes
