12mm, 25mm round holes at 45° staggered pitch with 50% open area

6.5mm, 20mm round holes at 90° straight pitch with 28% open area

50x5mm oblong holes at straight pitch with 45% open area

30x8mm oblong holes at straight pitch with 35% open area

25x5mm oblong holes at straight pitch with 40% open area

10mm square holes | 30x5mm rectangle holes at 90° straight pitch with 22% open area

16mm hexagon holes at 60° staggered pitch with 58% open area

24mm hexagon holes at 60° staggered pitch with 50% open area

20mm triangle holes | 24mm hexagon holes at 60° staggered pitch with 42% open area

25mm square holes at straight pitch with 51% open area

25mm square holes at staggered pitch with 51% open area

8mm, 20mm square holes at 45° staggered pitch with 40% open area

15mm, 34mm round holes at 45° staggered pitch with 62% open area

12mm, 20mm round holes at 90° straight pitch with 35% open area

50x5mm oblong holes at staggered pitch with 45% open area

7mm, 9.5mm round holes | 30x8mm, 18x7mm oblong holes at 45° staggered pitch with 37% open area

50x5mm oblong holes at staggered pitch with 32% open area

80x5mm, 30x5mm rectangle holes at straight pitch with 26% open area

24mm hexagon holes at 60° staggered pitch with 64% open area

27.7mm hexagon holes at 60° staggered pitch with 60% open area

20mm triangle holes | 16mm hexagon holes | 30x5mm rectangle holes at 60° staggered pitch with 40% open area

25mm square holes at straight pitch with 60% open area

25mm square holes at staggered pitch with 60% open area

5mm, 16mm round holes at 90° straight pitch with 12% open area

25x5mm oblong holes at straight pitch with 40% open area

12mm, 20mm round holes | 25x5mm oblong holes at 60° staggered pitch with 34% open area

18x7mm oblong holes at 45° staggered pitch with 40% open area

30x8mm oblong holes at straight pitch with 40% open area

10mm square holes | 30x10mm rectangle holes at 45° staggered pitch with 42% open area

27.7mm hexagon holes at 60° staggered pitch with 73% open area

20mm triangle holes at 60° staggered pitch with 45% open area

14mm square holes at straight pitch with 34% open area

14mm square holes at staggered pitch with 34% open area

14mm square holes at straight pitch with 24% open area

12mm, 19mm round holes at 90° straight pitch with 23% open area

25x5mm oblong holes at staggered pitch with 40% open area

25x5mm oblong holes at 60° staggered pitch with 20% open area

12mm round holes | 30x8mm oblong holes at 45° staggered pitch with 42% open area

15x26mm special shaped holes at 90° straight pitch with 45% open area

10mm square holes | 30x10mm rectangle holes at straight pitch with 30% open area

16mm hexagon holes at 60° staggered pitch with 40% open area

20mm triangle holes at 60° staggered pitch with 30% open area

20mm square holes at straight pitch with 40% open area

20mm square holes at staggered pitch with 40% open area

20mm square holes at straight pitch with 48% open area