Size

1-1/4 x 8 in.

2 in.

2-1/2 in.

2-1/2 x 3 in.

2-1/2 x 4 in.

2-1/2 x 6 in.

2-1/2 x 8 in.

3 in.

4 in.

4 x 2-1/2 in.

4 x 3 in.

4 x 8 in.

4 x 11 in.

4 x 13-1/2 in.

5 in.

6 in.

6 x 3 in.

6 x 4 in.

8 in.

8 x 4 in.

8 x 6 in.

10 in.

12 in.

16 in.

Outlet Size

1/2 in.

3/4 in.

1 in.

1-1/2 in.

1-1/4 in.

2 in.

3 in.

4 in.

6 in.

8 in.

2-1/2 in.

Run Size

1-1/4 in.

1-1/2 in.

1-1/4 - 1-1/2 in.

2 - 2-1/2 in.

2-1/2 - 8 in.

3 - 4 in.

3 in.

4 in.

6 in.

2 in.

1-1/4 - 2 in.

1-1/2 - 2 in.

2-1/2 - 3 in.

5 - 8 in.

2-1/2 in.

8 in.

Header Pipe Size

1-1/4 in.

1-1/2 in.

2 in.

2-1/2 in.

3 in.

4 in.

6 in.

8 in.

2 - 2-1/2 in.

2-1/2 - 4 in.

3 - 4 in.

5 - 8 in.