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Perforated Metal Chart
Perforated Metal Chart
Perforations |
Centers |
Holes/sq. inch |
Open area |
Width direction |
Length direction |
.020 inch |
– |
625 |
20 % |
.530 |
.465 |
1/16 inch |
1/8 inch |
– |
23 % |
.500 |
.435 |
5/64 inch |
7/64 inch |
– |
46 % |
.286 |
.225 |
5/64 inch |
1/8 inch |
– |
36 % |
.375 |
.310 |
3/32 inch |
5/32 inch |
– |
32 % |
.400 |
.334 |
3/32 inch |
3/16 inch |
– |
23 % |
.500 |
.435 |
1/110 inch |
5/32 inch |
– |
36 % |
.360 |
.296 |
1/8 inch |
3/16 inch |
– |
40 % |
.333 |
.270 |
1/8 inch |
7/32 inch |
– |
29 % |
.428 |
.363 |
1/8 inch |
¼ inch |
– |
23 % |
.500 |
.435 |
5/32 inch |
7/32 inch |
– |
46 % |
.288 |
.225 |
5/32 inch |
¼ inch |
|
36 % |
.375 |
.310 |
3/16 inch |
¼ inch |
|
51 % |
.250 |
.192 |
3/16 inch |
5/16 inch |
– |
33 % |
.400 |
.334 |
¼ inch |
5/16 inch |
– |
58 % |
.200 |
.147 |
1/4 inch |
3/8 inch |
– |
40 % |
.333 |
.270 |
¼ inch |
7/16 inch |
— |
30 % |
.428 |
.363 |
1/4 inch |
½ inch |
– |
23 % |
.500 |
.435 |
3/8 inch |
½ inch |
– |
51 % |
.250 |
.192 |
3/8 inch |
9/16 inch |
– |
40 % |
.333 |
.270 |
3/8 inch |
5/8 inch |
– |
33 % |
.400 |
.334 |
7/16 inch |
5/8 inch |
– |
45 % |
.300 |
.239 |
1/8 inch |
11/16 inch |
– |
47 % |
.273 |
.214 |
9/16 inch |
¾ inch |
– |
51 % |
.250 |
.192 |
5/8 inch |
13/16 inch |
– |
53 % |
.231 |
.175 |
3/4 inch |
1 inch |
– |
51 % |
.250 |
.192 |
Round Holes |
.020 in |
– |
625 |
20 % |
– |
– |
.023 in |
– |
576 |
24 % |
– |
– |
.027 in |
– |
400 |
23 % |
– |
– |
.032 in |
– |
324 |
26 % |
– |
– |
.040 in |
– |
225 |
30 % |
— |
– |
.045 in |
– |
225 |
37 % |
– |
– |
1/16 in |
1/8 in |
– |
23 % |
– |
– |
5/64 in |
7/64 in |
– |
41 % |
– |
– |
5/64 in |
1/8 in |
– |
36 % |
– |
– |
3/32 in |
5/32 in |
– |
32 % |
– |
– |
3/32 in |
3/16 in |
– |
23 % |
– |
– |
3/32 in |
¼ in |
– |
12 % |
– |
– |
1/10 in |
5/32 in |
– |
36 % |
– |
– |
1/8 in |
3/16 in |
– |
35 % |
– |
– |
1/8 in |
7/32 in |
– |
29 % |
– |
– |
1/8 in |
¼ in |
– |
23 % |
– |
– |
5/32 in |
7/32 in |
– |
46 % |
– |
– |
5/32 in |
¼ in |
– |
36 % |
– |
– |
3/16 in |
¼ in |
– |
51 % |
– |
– |
3/16 in |
5/16 in |
– |
33 % |
– |
– |
¼ in |
5/16 in |
– |
58 % |
– |
– |
1/4 in |
3/8 in |
– |
40 % |
– |
– |
¼ in |
7/16 in |
– |
30 % |
– |
– |
¼ in |
½ in |
– |
23 % |
– |
– |
3/8 in |
9/16 in |
– |
51 % |
– |
– |
3/8 in |
5/8 in |
– |
40 % |
– |
– |
7/16 in |
5/8 in |
– |
33 % |
– |
– |
½ in |
11/16 in |
– |
45 % |
– |
– |
9/16 in |
¾ in |
– |
47 % |
– |
– |
5/8 in |
13/16 in |
– |
51 % |
– |
– |
3/4 in |
1 in |
– |
53 % |
– |
– |
Slotted Sheet |
|
1/8 x ¾ in |
– |
– |
41 % |
– |
– |
1/8 x 1 in |
– |
– |
43 % |
– |
– |
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