AQUA CREST Replacement 3US-PF01 Under Sink Water Filter, Compatible with Filtrete Advanced 3US-PF01, 3US-MAX-F01H, 3US-PF01H, Delta RP78702, Manitowoc K-00337, K-00338 Water Filter (Pack of 2) Our high-quality filters offer clean and fresh water to you and your family. Its easy to install requiring no tools. For detailed instruction, please kindly refer to the Instruction Manual in the box. To enjoy fresh water, it's recommended you replace the filter every 6 months or 2,000 gallons, whichever comes first will vary based on water quality. Offer reasonable price without compromising quality. Interchangeable with the 3M Filtrete 3US-PF01, 3US-MAX-F01H, 3US-PF01H Filter Cartridge; Fits 3US-PS01 Advanced Faucet Water Filtration Systems. AquaCrest is an independent brand. This filter is not an original product. **Please note that the compatible model numbers of the Filtrete products are quite similar. Double check the exact model number before purchase to make sure you get the right one!