The Hunter FE09 oil filter envelope helps capture contaminants efficiently, supporting cleaner oil filtration and dependable equipment performance. Designed for use in compatible filtration systems, this 17-1/2" x 18-1/2" filter envelope acts as a filtering medium that traps dirt, debris, and other unwanted particles as oil passes through it. Its durable construction is intended to wi... https://partsfe.com/fe09-hunter-filter-oil-envelope-17-12x18-12-cs100