- Measure the outside diameter (A)
- Measure the overall length including end caps (B)
Note: DO NOT include handles, strings or special adapters in this measurement - If the top and/or bottom end cap is open, measure the inside diameter of the opening (C)
- Identify the manufacturer and part# of the filter housing in which the replacement cartridge will be installed
- Identify if there is a center core
- Count the number of pleats
IMPORTANT: FILTER CARTRIDGE MEASUREMENTS MAY VARY SLIGHTLY
ALWAYS ALLOW A TOLERANCE OF +/‐ 1/16 in. (1.6 mm)