45° Staggered Round Round Hole PATTERNS 0.0625″ – 0.1250″ An alternate to the traditional 60 degree staggered centers patterns. 45 degree patterns are an option for those looking for something different. 0.0625 rd. x 0.1110 stag. HPSI: 81.2, %0A: 24.9 Max. perf. width: 60″ 0.0938 rd. x 0.2656 stag. HPSI: 14.2, %0A: 9.8 Max. perf. width: 48″ 0.1250 rd. x 0.3536 stag. HPSI: 8.0, %0A: 9.8 Max. perf. width: 59″