Modular unit:
Standard 20" "Big Blue" Filter Housing holds any standard 20" x 4.5" filter cartridge; comes with pressure relief button on the housing cap and a wrench for opening the housing.

Fittings for In/Out ports can be easily purchased from your local hardware store to ensure they fit your type of water pipes.

If you need multiple housings for your needs, consider our pre-assembled 3-Stage Big Blue Filter Systems.

Each housing measures:
8" /21.0cm Width
9" /23.5cm Depth
24"/61.0cm Height
(Allow some space to the left and right of the unit for installation of piping &/or a shutoff valve. Allow at least 4in/10cm below the unit for unscrewing and freeing the filter housings for filter cartridge changes)

Mounting bracket measures:
-Additional height (on top of housings): 4"/10cm
-Depth: 9"/23cm
-Width:
1-housing bracket: 5"/12cm
2-housing bracket: 16"/41cm
3-housing bracket: 24"/61cm

Mounting brackets are optional but recommended to ensure the filter housing is installed at least 4" above floor level to allow enough clearance for unscrewing of the housing for changing cartridges.

Replacement Cartridges
Order the type of cartridge needed to address your water problem. Click on these links if you want to select:

Regular replacement cartridges or
Specialty replacement cartridges