General Filters Fuel Oil Filter is the solution for oil-fired heating appliances commonly found in small to average-sized homes and commercial buildings. This filter excels in providing final filtration within central fuel oil distribution systems, ensuring clean and efficient fuel delivery. Designed to operate at a working pressure of 12 P.S.I., it features a 3/8" NPT connection and a 10-micron wool felt cartridge with a center core bonded to prevent media migration. This product is UL listed, ing safety and reliability. Available in different firing rates, it meets diverse heating needs while maintaining high filtration standards for optimal performance. Model Number: 1A25B