PACKAGE OF 2 CL10ROT33-B The superior engineering and production techniques of the Omnipure CL10ROT33-B inline water filter have made it an industry standard for over 30 years. This filter cartridge has precisely cut threaded connections and is friction-welded together for a reliably leak-proof unit. The CL10ROT33-B filter improves the taste and quality of water, pure and simple. The superior engineering and production techniques of the Omnipure CL10ROT33-B inline water filter have made it an industry standard for over 30 years. This filter cartridge has precisely cut threaded connections and is friction-welded together for a reliably leak-proof unit. The CL10ROT33-B filter improves the taste and quality of water, pure and simple.