Our commercial-grade 4.5 x 10 filter housings are made for both point-of-use and point-of-entry applications. For most whole house applications this size filter is suitable, however, you may need to change cartridges more frequently. We offer three configurations; single, dual and triple. Inlet sizes available are 3/4 and 1. US Water filter housings are equal to or better than any other 4.5 x 10 filter housing.