Perforations Open Area: 40% Pattern: Round 3/8” (.375”) x 9/16” (.563”) Staggered Centers Open Area: 15% Pattern: Round 3/8” (.375”) x 55/64” (.866”) Straight Centers Open Area: 13% Pattern: Round 3/8” (.375”) x 31/32” (.974”) Staggered Centers R38-916SG40 R38-5564ST15 R38-3132SG13 Open Area: 11% Pattern: Round 3/8” (.375”) x 1” (1.000”) Straight Centers Open Area: 48% Pattern: Round 1/2” (.500”) x 11/16” (.688”) Staggered Centers Open Area: 35% Pattern: Round 1/2” (.500”) x 3/4” (.750”) Straight Centers Open Area: 23% Pattern: Round 1/2” (.500”) x 1” (1.000”) Staggered Centers Open Area: 25% Pattern: Square 1/4” (.250”) x 1/2” (.500”) Straight Centers Open Area: 13% Pattern: Square 1/4” (.250”) x 3/4” (.750”) Staggered Centers R38-10ST11 R12-1116SG48 R12-34ST35 R12-10SG23 S14-12ST25 S14-34SG13 STANDARD PERFORATION PATTERNS
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