The Opti-Clean is a fully-drainable filter housing that can be cleaned with automated clean-in-place (CIP) technology. The new Opti-Clean filter housing eliminates the collection chamber of conventional housings, and incorporates a specially machined, angled cartridge plate in the base which allows for complete drainage of any filtered and unfiltered product. The housing interior is thoroughly sanitized using an automated multi-head spray wand in a CIP process that meets the stringent riboflavin test at flow rates as low as 10gpm.