Using tables from the National Fuel Gas Code or our Sizing & Application Guide, determine the diameter of venting required. The Sizing & Application Guide also offers tips on good design including multi-appliance system sizing and design.
Model | Size | Dim. A | Dim. B |
---|---|---|---|
3RN4 | 3" to 4" | 3 3/4" | 5 1/4" |
3RN5 | 3" to 5" | 3 3/4" | 5 1/4" |
3RN6 | 3" to 6" | 3 3/4" | 5 1/4" |
3RN7 | 3" to 7" | 3 3/4" | 5 1/4" |
4RN5 | 4" to 5" | 3 3/4" | 5 1/4" |
4RN6 | 4" to 6" | 3 3/4" | 5 1/4" |
4RN7 | 4" to 7" | 3 3/4" | 5 1/4" |
5RN6 | 5" to 6" | 3 3/4" | 5 1/4" |
6RN7 | 6" to 7" | 3 3/4" | 5 1/4" |
6RN8 | 6" to 8" | 3 3/4" | 5 1/4" |
7RN8 | 7" to 8" | 3 7/8" | 5 3/8" |
8RN10 | 8" to 10" | 3 7/8" | 5 3/8" |
8RN12 | 8" to 12" | 3 7/8" | 5 3/8" |
10RN12 | 10" to 12" | 3 7/8" | 5 3/8" |