Flanged Sleeve Bearing: 1/4" ID, 3/8" OD, 3/8" OAL, Polytetrafluroethylene MPN:BJ4F040603

This pleated air filter is an essential component for improving indoor air quality in commercial or industrial environments by trapping dust, dirt, pollen and other particulate matter down to 1 micron in size. Its 18 x 18 x 1 dimensions make it suitable for HVAC systems, air handlers, furnaces, or filters boxes where space may be limited yet maximum efficiency is required without sacrificing filter area. With a MERV (Minimum Efficiency Reporting Value) rating of 8, this filter provides up to 35% efficient particulate removal, suitable for general ventilation and less stringent clean air requirements while maintaining an affordable option ideal for industrial spaces or facilities with large volumes of air that need regular changeouts. Its wire-backed pleated design ensures long lasting structural integrity and simple, low maintenance installation, allowing businesses to focus on productivity rather than filter maintenance.