FA Exhibit CMP-001

Mesh openings at true scale — 1/4, 1/8, and 1/16 inch

Three mesh swatches drawn at the same scale. 1/4 inch sits outside the R327.3.2 band. 1/8 inch is the maximum permitted. 1/16 inch is the minimum permitted. — FA Exhibit CMP-001. 1/4 inch insect screen is outside the Oregon R327.3.2 band. Not a universal ban of 1/4 inch mesh. After ORSC R327.3.2 and FEMA P-737 openings less than 1/8 inch. Illustrative — not a construction document. Verify with your building official. CC BY 4.0.

Technical review: Grayson Graham. Last verified 2026-08-23. JSON

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