The FM-BB-10-1 Flow Max Pleated 1 Micron Filter Cartridge 4-1/2" x 10" is a high quality filter cartridge from Flow Max that functions better than all commonly used wound, spun, melt blown, resin bonded and other ?depth? type filter elements as the cartridges are pleated to provide increased surface area and longer life. The filter media is thoroughly produced using 100% synthetic fibers, which is easily cleanable, thicker and cost-effective. It contains no binders or additives to leave a residue or foam. This 10? x 4-1/2? FM-BB-10-1 requires fewer cartridge replacements as compared to other pleated cartridge suppliers. Featuring improved dirt holding capacity and longer life, this 1 micron pleated sediment filter allows for increased flow rates and thus lower pressure drop.