Paper Filters

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 / Without Hole
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 of the hole to determine the position.

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 of the hole to determine the position.

Paper Filters

Double Thickness
1. Stiched one edge