DOWNLOAD AND PRINT PDF OF FILTER SIZE CHART

Measure Width, Length or Diameter of the filter to the most outside points. Note any hole in the filter, the location of the hole and size or diameter of the hole. Then locate the filter from pages 7 or 8 of this catalog. If the filter you're looking for is not listed, or you have questions concerning filter size, material or availability, call 1-800-523-3814
 

SHEET
SINGLE THICKNESS

1. Measure width and length.
2. If a hole is present:
A. Measure across the opening of the hole to
determine the diameter.
B. Measure all sides to the outside edge of the hole to determine its position.

ENVELOPE
DOUBLE THICKNESS WITH STITCHING ON 2 OR 3 SIDES. THESE FILTERS WILL COME WITH OR WITHOUT HOLES. IF A HOLE IS PRESENT IT WILL EITHER BE THROUGH 1 SHEET OR GO DIRECTLY THROUGH THE FILTER.

1. Measure width and length.
2. If a hole is present:
A. Measure across the opening of the hole to determine the diameter.
B. Make a note if the hole is through 1 side of the filter or passes straight through both sides of the filter.
C. Measure from the closed or stitched points of the filter to the edge of the hole. You should have 3 measurements for the hole position when you've finished.

DISC
ROUND WITH HOLE OR WITHOUT HOLE

1. Measure diameter of disc.
2. If a hole is present:
A. Measure across the opening of the hole to
determine the diameter.
B. Measure all sides to the outside edge of the hole to determine its position.