Perforated Metals: Square Holes

Images presented here are not actual sizes, they are for visual comparision only.

1/8" sq. 5/32" ctrs. 66% open area .200" sq. 1/4" ctrs. 64% open 1/4" sq. 5/16" ctrs. 63% open area 5/16" sq. 7/16" ctrs. 50% open area 3/8" sq. 1/2" ctrs. 56% open area
1/2" sq. 5/8" ctrs. 64% open area 3/4" sq. 1" ctrs. 56% open area