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 |
---|---|---|---|
3RTF | 3" | 11" | 7 1/2" |
4RTF | 4" | 11" | 7 1/2" |
5RTF | 5" | 11" | 7 1/2" |
6RTF | 6" | 11" | 7 1/2" |
7RTF | 7" | 11" | 11" |
8RTF | 8" | 11" | 11" |
10RTF | 10" | 11" | 16' |
12RTF | 12" | 11" | 16" |
14RTF | 14" | 11" | 19 1/4" |
16RTF | 16" | 11" | 19 1/4" |
18RTF | 18" | 11" | 23 5/8" |
20RTF | 20" | 11" | 23 5/8" |
22RTF | 22" | 11" | 27 5/8" |
24RTF | 24" | 11" | 27 5/8" |
26FT | 26" | 11" | 31 9/16" |
28FT | 28" | 11" | 31 9/16" |
30FT | 30" | 11" | 31 9/16" |