PLEASE NOTE: Our lead time has been temporarily extended to as much as two weeks.

Callout Size

Outside Dimensions

        Rough Opening               (minimum-maximum)      

Free Air

Width

Height

Width

Height

SF

% free

22x08

23.25''

9.25''

20.75'' - 22.5''

6.75'' - 8.5''

0.686

56.1%

22x10

23.25''

11.25''

20.75'' - 22.5''

8.75'' - 10.5''

0.903

59.1%

22x12

23.25''

13.25''

20.75'' - 22.5''

10.75'' - 12.5''

1.120

61.1%

22x14

23.25''

15.25''

20.75'' - 22.5''

12.75'' - 14.5''

1.337

62.5%

22x16

23.25''

17.25''

20.75'' - 22.5''

14.75'' - 16.5''

1.554

63.6%

22x18

23.25''

19.25''

20.75'' - 22.5''

16.75'' - 18.5''

1.771

64.4%

22x20

23.25''

21.25''

20.75'' - 22.5''

18.75'' - 20.5''

1.988

65.1%

22x22

23.25''

23.25''

20.75'' - 22.5''

20.75'' - 22.5''

2.205

65.6%

22x24

23.25''

25.25''

20.75'' - 22.5''

22.75'' - 24.5''

2.422

66.1%

22x25

23.25''

26.25''

20.75'' - 22.5''

23.75'' - 25.5''

2.531

66.3%

22x26

23.25''

27.25''

20.75'' - 22.5''

24.75'' - 26.5''

2.639

66.4%

22x28

23.25''

29.25''

20.75'' - 22.5''

26.75'' - 28.5''

2.856

66.8%

22x30

23.25''

31.25''

20.75'' - 22.5''

28.75'' - 30.5''

3.073

67.1%

22x32

23.25''

33.25''

20.75'' - 22.5''

30.75'' - 32.5''

3.290

67.3%

22x34

23.25''

35.25''

20.75'' - 22.5''

32.75'' - 34.5''

3.507

67.5%

22x36

23.25''

37.25''

20.75'' - 22.5''

34.75'' - 36.5''

3.724

67.7%

24x08

25.25''

9.25''

22.75'' - 24.5''

6.75'' - 8.5''

0.752

56.4%

24x10

25.25''

11.25''

22.75'' - 24.5''

8.75'' - 10.5''

0.990

59.4%

24x12

25.25''

13.25''

22.75'' - 24.5''

10.75'' - 12.5''

1.228

61.4%

24x14

25.25''

15.25''

22.75'' - 24.5''

12.75'' - 14.5''

1.466

62.8%

24x16

25.25''

17.25''

22.75'' - 24.5''

14.75'' - 16.5''

1.704

63.9%

24x18

25.25''

19.25''

22.75'' - 24.5''

16.75'' - 18.5''

1.941

64.7%

24x20

25.25''

21.25''

22.75'' - 24.5''

18.75'' - 20.5''

2.179

65.4%

24x22

25.25''

23.25''

22.75'' - 24.5''

20.75'' - 22.5''

2.417

65.9%

24x24

25.25''

25.25''

22.75'' - 24.5''

22.75'' - 24.5''

2.655

66.4%

24x26

25.25''

27.25''

22.75'' - 24.5''

24.75'' - 26.5''

2.893

66.8%

24x30

25.25''

31.25''

22.75'' - 24.5''

28.75'' - 30.5''

3.368

67.4%

24x32

25.25''

33.25''

22.75'' - 24.5''

30.75'' - 32.5''

3.606

67.6%

24x34

25.25''

35.25''

22.75'' - 24.5''

32.75'' - 34.5''

3.844

67.8%

24x36

25.25''

37.25''

22.75'' - 24.5''

34.75'' - 36.5''

4.082

68.0%

25x08

26.25''

9.25''

23.75'' - 25.5''

6.75'' - 8.5''

0.785

56.5%

25x10

26.25''

11.25''

23.75'' - 25.5''

8.75'' - 10.5''

1.033

59.5%

25x12

26.25''

13.25''

23.75'' - 25.5''

10.75'' - 12.5''

1.282

61.5%

25x14

26.25''

15.25''

23.75'' - 25.5''

12.75'' - 14.5''

1.530

62.9%

25x16

26.25''

17.25''

23.75'' - 25.5''

14.75'' - 16.5''

1.778

64.0%

25x18

26.25''

19.25''

23.75'' - 25.5''

16.75'' - 18.5''

2.026

64.8%

25x20

26.25''

21.25''

23.75'' - 25.5''

18.75'' - 20.5''

2.275

65.5%

25x22

26.25''

23.25''

23.75'' - 25.5''

20.75'' - 22.5''

2.523

66.1%

25x25

26.25''

26.25''

23.75'' - 25.5''

23.75'' - 25.5''

2.895

66.7%

25x26

26.25''

27.25''

23.75'' - 25.5''

24.75'' - 26.5''

3.020

66.9%

25x28

26.25''

29.25''

23.75'' - 25.5''

28.75'' - 28.5''

3.268

67.2%

25x30

26.25''

31.25''

23.75'' - 25.5''

28.75'' - 30.5''

3.516

67.5%

25x32

26.25''

33.25''

23.75'' - 25.5''

30.75'' - 32.5''

3.764

67.8%

25x34

26.25''

35.25''

23.75'' - 25.5''

32.75'' - 34.5''

4.013

68.0%

25x36

26.25''

37.25''

23.75'' - 25.5''

34.75'' - 36.5''

4.261

68.2%

26x08

27.25''

9.25''

24.75'' - 26.5''

6.75'' - 8.5''

0.818

56.6%

26x10

27.25''

11.25''

24.75'' - 26.5''

8.75'' - 10.5''

1.077

59.6%

26x12

27.25''

13.25''

24.75'' - 26.5''

10.75'' - 12.5''

1.336

61.6%

26x14

27.25''

15.25''

24.75'' - 26.5''

12.75'' - 14.5''

1.594

63.1%

26x16

27.25''

17.25''

24.75'' - 26.5''

15.75'' - 16.5''

1.853

64.1%

26x18

27.25''

19.25''

24.75'' - 26.5''

16.75'' - 18.5''

2.112

65.0%

26x20

27.25''

21.25''

24.75'' - 26.5''

18.75'' - 20.5''

2.370

65.6%

26x22

27.25''

23.25''

24.75'' - 26.5''

20.75'' - 22.5''

2.629

66.2%

26x24

27.25''

25.25''

24.75'' - 26.5''

22.75'' - 24.5''

2.888

66.6%

26x25

27.25''

26.25''

24.75'' - 26.5''

23.75'' - 25.5''

3.017

66.8%

26x26

27.25''

27.25''

24.75'' - 26.5''

24.75'' - 26.5''

3.146

67.0%

26x28

27.25''

29.25''

24.75'' - 26.5''

26.75'' - 28.5''

3.405

67.4%

26x30

27.25''

31.25''

24.75'' - 26.5''

30.75'' - 30.5''

3.664

67.6%

26x32

27.25''

33.25''

24.75'' - 26.5''

30.75'' - 32.5''

3.922

67.9%

26x34

27.25''

35.25''

24.75'' - 26.5''

32.75'' - 34.5''

4.181

68.1%

26x36

27.25''

37.25''

24.75'' - 26.5''

34.75'' - 36.5''

4.440

68.3%

28x08

29.25''

9.25''

26.75'' - 28.5''

6.75'' - 8.5''

0.884

56.8%

28x10

29.25''

11.25''

26.75'' - 28.5''

8.75'' - 10.5''

1.164

59.8%

28x12

29.25''

13.25''

26.75'' - 28.5''

10.75'' - 12.5''

1.443

61.8%

28x14

29.25''

15.25''

26.75'' - 28.5''

12.75'' - 14.5''

1.723

63.3%

28x16

29.25''

17.25''

26.75'' - 28.5''

14.75'' - 16.5''

2.002

64.4%

28x18

29.25''

19.25''

26.75'' - 28.5''

16.75'' - 18.5''

2.282

65.2%

28x20

29.25''

21.25''

26.75'' - 28.5''

18.75'' - 20.5''

2.561

65.9%

28x22

29.25''

23.25''

26.75'' - 28.5''

20.75'' - 22.5''

2.841

66.4%

28x24

29.25''

25.25''

26.75'' - 28.5''

22.75'' - 24.5''

3.120

66.9%

28x25

29.25''

26.25''

26.75'' - 28.5''

23.75'' - 25.5''

3.260

67.1%

28x26

29.25''

27.25''

26.75'' - 28.5''

24.75'' - 26.5''

3.400

67.2%

28x28

29.25''

29.25''

26.75'' - 28.5''

26.75'' - 28.5''

3.679

67.6%

28x30

29.25''

31.25''

26.75'' - 28.5''

28.75'' - 30.5''

3.959

67.9%

28x32

29.25''

33.25''

26.75'' - 28.5''

30.75'' - 32.5''

4.238

68.1%

28x34

29.25''

35.25''

26.75'' - 28.5''

32.75'' - 34.5''

4.518

68.3%

28x36

29.25''

37.25''

26.75'' - 28.5''

34.75'' - 36.5''

4.797

68.5%

30x08

31.25''

9.25''

28.75'' - 30.5''

6.75'' - 8.5''

0.950

57.0%

30x10

31.25''

11.25''

28.75'' - 30.5''

8.75'' - 10.5''

1.250

60.0%

30x12

31.25''

13.25''

28.75'' - 30.5''

10.75'' - 12.5''

1.551

62.0%

30x14

31.25''

15.25''

28.75'' - 30.5''

12.75'' - 14.5''

1.851

63.5%

30x16

31.25''

17.25''

28.75'' - 30.5''

14.75'' - 16.5''

2.151

64.5%

30x18

31.25''

19.25''

28.75'' - 30.5''

16.75'' - 18.5''

2.452

65.4%

30x20

31.25''

21.25''

28.75'' - 30.5''

18.75'' - 20.5''

2.752

66.1%

30x22

31.25''

23.25''

28.75'' - 30.5''

20.75'' - 22.5''

3.053

66.6%

30x24

31.25''

25.25''

28.75'' - 30.5''

22.75'' - 24.5''

3.353

67.1%

30x25

31.25''

26.25''

28.75'' - 30.5''

23.75'' - 25.5''

3.503

67.3%

30x26

31.25''

27.25''

28.75'' - 30.5''

24.75'' - 26.5''

3.653

67.4%

30x28

31.25''

29.25''

28.75'' - 30.5''

26.75'' - 28.5''

3.954

67.8%

30x30

31.25''

31.25''

28.75'' - 30.5''

28.75'' - 30.5''

4.254

68.1%

32x08

33.25''

9.25''

30.75'' - 32.5''

6.75'' - 8.5''

0.998

46.7%

32x10

33.25''

11.25''

30.75'' - 32.5''

8.75'' - 10.5''

1.313

50.5%

32x12

33.25''

13.25''

30.75'' - 32.5''

10.75'' - 12.5''

1.628

53.2%

32x14

33.25''

15.25''

30.75'' - 32.5''

12.75'' - 14.5''

1.943

55.2%

32x16

33.25''

17.25''

30.75'' - 32.5''

14.75'' - 16.5''

2.258

56.7%

32x18

33.25''

19.25''

30.75'' - 32.5''

16.75'' - 18.5''

2.573

57.9%

32x20

33.25''

21.25''

30.75'' - 32.5''

18.75'' - 20.5''

2.888

58.9%

34x08

35.25''

9.25''

32.75'' - 34.5''

6.75'' - 8.5''

1.064

47.0%

34x10

35.25''

11.25''

32.75'' - 34.5''

8.75'' - 10.5''

1.400

50.8%

34x12

35.25''

13.25''

32.75'' - 34.5''

10.75'' - 12.5''

1.736

53.5%

34x14

35.25''

15.25''

32.75'' - 34.5''

12.75'' - 14.5''

2.072

55.5%

34x16

35.25''

17.25''

32.75'' - 34.5''

14.75'' - 16.5''

2.408

57.0%

34x18

35.25''

19.25''

32.75'' - 34.5''

16.75'' - 18.5''

2.743

58.2%

34x20

35.25''

21.25''

32.75'' - 34.5''

18.75'' - 20.5''

3.079

59.2%

36x08

37.25''

9.25''

34.75'' - 36.5''

3.75'' - 8.5''

1.130

47.2%

36x10

37.25''

11.25''

34.75'' - 36.5''

8.75'' - 10.5''

1.487

51.1%

36x12

37.25''

13.25''

34.75'' - 36.5''

10.75'' - 12.5''

1.843

53.8%

36x14

37.25''

15.25''

34.75'' - 36.5''

12.75'' - 14.5''

2.200

55.8%

36x16

37.25''

17.25''

34.75'' - 36.5''

14.75'' - 16.5''

2.557

57.3%

36x18

37.25''

19.25''

34.75'' - 36.5''

16.75'' - 18.5''

2.914

58.5%

36x20

37.25''

21.25''

34.75'' - 36.5''

18.75'' - 20.5''

3.270

59.5%


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