Comparison : Item # HKXAA12, Sullivan Palatek - PE3 Alternate Filter Elements
Item # HKXAA16, Sullivan Palatek - PE3 Alternate Filter Elements
Item # HKXAA20, Sullivan Palatek - PE3 Alternate Filter Elements
Item # HKXAA24, Sullivan Palatek - PE3 Alternate Filter Elements
Item # HKXAA28, Sullivan Palatek - PE3 Alternate Filter Elements