Actual clear opening or space between the inside edge of two parallel wires. Related Articles: How to Install Aluminum and Other Metal Grates: A Step-by-Step GuideGlossary: Confinement MeshGlossary: Space ClothGlossary: Bottom Flange SpaceGlossary: Percent Open Area« Back to Glossary Index No category July 9, 2018 admin Comments are closed