CLAY FLUE LINING
![]()
The Kopp Clay Company has been manufacturing architectural clay products for more than 80 years. We are dedicated to producing only products of the highest quality, made from native Ohio clays.
The Kopp Clay Company has melded time know traditional methods of the industry, and brought them up-to-date with today's technology, to produce fine clay products that are backed with service and customer satisfaction.
All products manufactured by the Kopp Clay Company are manufactured in
accordance with and will meet the requirements of ASTM C315-91.
| SQUARE/RECTANGLE FLUE DIMENSIONS & APPROXIMATE EFFECTIVE FLUE AREA | ||||
|
Flue Size
|
Outside Dimensions (Approx. In.) |
Inside Dimensions (Approx. In.) |
Wall Thickness |
Effective |
|
4 ½ x 8 ½ |
4 ½ x 8 ½ |
3 ½ x 7 ½ |
1/2" |
26 |
|
4 ½ x 13 |
4 ¾ x 13 ¾ |
3 ¼ x 12 ¼ |
3/4" |
40 |
|
7 ½ x 7 ½ |
7 5/8 x 7 5/8 |
6 3/8 x 6 3/8 |
5/8" |
33 |
|
8 x 8 |
8 x 8 |
6 5/8 x 6 5/8 |
5/8" |
42 |
|
8 ½ x 8 ½ |
8 3/8 x 8 3/8 |
6 ¾ x 6 ¾ |
3/4" |
49 |
|
7 ½ x 11 ½ |
7 7/8 x 11 ½ |
6 3/8 x 10 ¼ |
7/8" |
52 |
|
8 x 12 |
8 x 12 |
6 ½ x 10 3/8 |
5/8" |
67 |
|
8 ½ x 13 |
8 3/8 x 12 3/8 |
6 1/8 x 11 |
5/8" – 3/4" |
76 |
|
12 x 12 |
11 7/8 x 11 7/8 |
10 3/8 x 10 3/8 |
3/4" |
102 |
|
13 x 13 |
12 7/8 x 12 7/8 |
11 1/8 x 11 1/8 |
3/4" |
127 |
|
8 ½ x 18 |
8 ¾ x 17 ¾ |
6 ¼ x 15 5/8 |
1 1/8" |
102 |
|
12 x 16 |
11 ½ x 15 5/8 |
9 5/8 x 13 ¾ |
1 1/8" |
131 |
|
13 x 18 |
13 1/8 x 17 ¾ |
10 ¼ x 15 ½ |
1 1/8" |
173 |
|
16 x 16 |
15 ¾ x 15 ¾ |
13 5/8 x 13 5/8 |
1 1/4" |
181 |
|
18 x 18 |
18 ½ x 18 ½ |
16 x 16 |
1 1/2" |
233 |
|
16 x 20 |
15 ½ x 19 ½ |
13 1/8 x 17 ¼ |
1 1/4" |
222 |
|
20 x 20 |
19 ¾ x 19 ¾ |
16 ½ x 17 ½ |
1 5/8" |
298 |
|
20 x 24 |
19 ½ x 23 |
16 ¼ x 20 |
1 5/8" |
335 |
|
24 x 24 |
23 ¾ x 23 ¾ |
19 ¼ x 20 ¾ |
1 3/4" |
431 |
| ROUND FLUE DIMENSIONS & APPROXIMATE EFFECTIVE FLUE AREA | ||||
|
Flue Size |
Outside Dimensions (Approx. In.) |
Inside Dimensions (Approx. In.) |
Wall Thickness |
Effective |
|
6" |
7 ¼" |
6 ¼" |
5/8" |
23 |
|
7" |
9" |
7 ¼" |
|
38 |
|
8" |
9 ½" |
8" |
13/16" |
50 |
|
9" |
10 7/8" |
9" |
13/16" |
64 |
|
10" |
12 1/4" |
10 1/4" |
1" |
79 |
|
12" |
14 1/4" |
12 1/8" |
1 1/8" |
113 |
|
15" |
17 7/8" |
14 3/4" |
1 3/8" |
177 |
|
18" |
20 3/4" |
17 1/4" |
1 1/4” |
255 |
|
21" |
24 1/2" |
21" |
1 3/4" |
346 |
|
24" |
27" |
24 1/8" |
1 7/8" |
452 |
|
27" |
30 7/8" |
27" |
1 15/16" |
573 |
|
30" |
34 1/4" |
30" |
2 1/8" |
707 |
|
33" |
37 1/4" |
33" |
2 1/8" |
855 |
|
36" |
40 3/4" |
36" |
2 3/8" |
1018 |
