Architectural Metal Perforation Patterns
A Whole Lot of Holes
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.250" Sqr. X .750" Straight Centers11%Open Area
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.250" X 2.500" Slot on .500" Centers45%Open Area
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.313" X .875" Dmd. on .250" Centers55%Open Area
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.375" Dia. X .500" Centers51%Open Area
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.375" Dia. X .563" Centers40%Open Area
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.375" Dia. X .625" Centers33%Open Area
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.375" Dia. X .750" Centers23%Open Area
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.375" Sqr. X .500" Straight Centers56%Open Area
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.375" x 1.500" Slot on .625" Centers51%Open Area
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.375" X 2.000" Slot on .875" Centers33%Open Area
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.438" Dia. X .625" Centers45%Open Area
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.500 Hex. X .750" Centers44%Open Area