This is the complete AP200 filter system including the housing, head, mounting bracket, o-ring, and AP217 replacement filter.
The first stage of filtration employs the exclusive Aqua-Pure graded density pre-filter made from an exclusive process using pure white cellulose fibers. This unique process offers unsurpassed filtration performance. Then, the water enters a deep bed of specially formulated activated carbon where the water comes into contact with hundreds of thousands of activated sites which effectively reduce unwanted tastes, odors, and chlorine.

3M AquaPure 55289-01 AP200 Filter System w/AP217 Cartridge 5 Micron Features:

• Reduction Claims: Sediment, chlorine taste and odor @ 2 GPM
• Applications: Drinking, cooking, and all other food applications
• Easily installs under sink or in confined spaces
• Full, unrestricted flow to all standard kitchen faucets
• Protection against pressure surges and water hammer
• NSF 42 Certified
• Manufactured from FDA CFR-12 compliant materials
• 10 year limited warranty

3M AquaPure 55289-01 AP200 Filter System w/AP217 Alternate Part Numbers:

• 55289-01
• Grainger Part #2P075
• ACE Part #4206553
• 3M Part Number: 5528901
• 3M ID: 70020007418
• For use with the AP217: 4629002 and 4629005 Replacement Cartridge (3M ID: 70020014273 and 70020146240)

CONSUMER NOTE:Aqua Pure has not changed the threads on the head for the AP200 housing since 1979. If your filter head is older than 1979, it will not work with current replacement filters such as the DW-200R and the AP-217. Pre-1979 heads will have the mounting bracket molded to the head as one piece. Post-1979 heads will have the mounting bracket attatched to the top of the head with screws. Other less expensive housing options for 3/8" line include: US-316 and Slim line housings.