Hankison 3223805 Air Filter 340155 7024 Complete Assembly: Simplifies the Ultra Complete Assembly: Simplifies the Ultra Gas boiler repair process by bundling all required seals and hardware in one manufacturer sealed package Premium American Made Quality: Machined from domestic high copper brass for superior corrosion resistance and durability compared to low quality imports this ambient air filter provides the structural integrity and high capture efficiency required to prevent downstream equipment failure and costly production downtime it can be used in any air treatment system requiring these specific dimensions and micron ratings