The Pentek 150435 is a clear standard sized filter housing. This unit has a clear housing and a black mounting bracket cap with a pressure release valve, making changing the filter simple. Cap has 3/4″ threaded NPT fittings. Ideal for wet basement compartment installation or external use. Clear housings are not recommended for under counter or under sink applications. Size Information: 3/4″ NPT 12-5/8″ x 5-1/4″. For use with 2-1/2″ to 2-7/8″ diameter filters. Filter and mounting bracket NOT included.