Brand new in box Whirlpool. 3 month filter life. 30 micron nominal filtration. Fits industry standard 10 inch x 2-1/2 inch filter housings including WHKF-DWHV and WHKF-DWH. Reduces sand, dirt, silt, sediment, and rust. Tested and certified by NSF International against NSF/ANSI Standard 42 in model WHKF-DWHV.