Measure the outside diameter of the cartridge (in
inches, +/- 1/32”).
Measure the cartridge length (in inches, +/-1/16”) including end caps but excluding any
handles or other extensions. Unicel recommends
measuring through the center (if possible) rather
than along the outside edge.
Identify the cartridge outside edge end cap
configuration using the chart below.
If the top and/or bottom is “open,” measure the
inside diameter (in inches, +/- 1/32”) of the top
and/or bottom.
Record the OEM name and model of the filter the
cartridge came out of (if possible).
Count the number of pleats (+/- 2) and note
whether there is a center core or not.
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