How to Compute Screen Module % Of Open Area

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Step 1:    Determine the total area of the screen module

Module Area  =   Module Width (inches) x Module Length (inches)

Example 1

A module that is 12" x 12"  has a total surface area of 144 square inches.

or,

A module that is 12" x 24" has a total surface area of 288 square inches.

Step 2:    Determine the individual aperature (opening) area

Individual       Aperture Area  =   Aperture Width (inches) x Aperture Length (inches)

Example 2

An aperture of 7/32" x 7/32" (0.21875" x 0.21875") has an area of 0.0478 square inches

or,

An aperture opening of 1/8" x 1/2" (0.125" x 0.500") has an area of 0.625 square inches

Step 3:    Determine the total number of apertures

Example 3

A module with 28 rows across the width and 60 rows across the length (28 x 60)

has a total of 1680 apertures

Step 4:   Determine the total area of aperture openings

Total   Aperture Area  =   Number of Apertures x Individual Aperture Area

Example 4

A module with a total 1680 apertures, each with an area of 0.0475 square inches

has a total aperture opening area of 79.8 square inches

1680   Apertures   x 0.0475   Square Inches per Aperture 79.80   Square Inches Total Area of Openings

Step 5:   Determine the Percentage of Open Area

Total Area of Openings  % Open Area  =     Total Area Of Module

Example 5

A 12" x 24" module having a total area of 288 Square Inches and a total opening area of 79.80 Square Inches has a 27.7% Useable Open Area

79.80 Square Inches   ÷   288 Square Inches  =    27.7% Useable Open Area

Screen Technology Group, Inc.        800.440.MESH