Metal Perforation Patterns
Pattern Perfection From Hendrick
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.250" Diameter Round on .500" Centers Straight20%Open Area
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.250" Diameter Round on .541" Centers19%Open Area
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.250" Diameter Round on .650" Centers13%Open Area
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.250" Diameter Round on .866" Centers8%Open Area
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.250" Diameter Round on 1.000" Centers Straight5%Open Area
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.250" Hexagon on .281" Centers79%Open Area
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.250" Square on .313" Centers Straight64%Open Area
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.250" Square on .375" Centers Straight44%Open Area
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.250" Square on .625" Centers Straight16%Open Area
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.250" Square on .750" Centers Straight11%Open Area
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.250" X .750" on .813" Centers Ellipse65%Open Area
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.281" x 1.844" Slot on 1.969" Straight65%Open Area