Description
Compatible for 3M Aqua Pure AP810 Whirlpool WHKF GD25BB Compatible Whole House Water Filters 4 PACK 500 GPD 4 "X 40" The dual gradient design extends service The dual gradient design extends service life by capturing larger particles in the outer string wound layer while the meltblown core captures finer sediment down to 5 microns stage 5 every 12 months