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 | I.D. (A) | O.D. (B) | (C) | (D) |
---|---|---|---|---|---|
3REA60 | 3" | 3" | 3 1/2" | 1 7/8" | 5 1/4" |
4REA60 | 4" | 4" | 4 1/2" | 2 1/8" | 5 1/2" |
5REA60 | 5" | 5" | 5 1/2" | 2 1/4" | 6" |
6REA60 | 6" | 6" | 6 1/2" | 2 5/8" | 6 3/8" |