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. The System Design and Installation Guide is an additional resource.
The oval-to-round adapter is used for conversion of vent from oval to round.
Model | Size | A |
---|---|---|
40E | 4" | 6 7/8" |
50E | 5" | 9 3/8" |
60E | 6" | 10 3/4" |
The round-to-oval adapter is used for conversion of vent from round to oval.
Model | Size | A |
---|---|---|
4EO | 4" | 6 7/8" |
5EO | 5" | 9 3/8" |
6EO | 6" | 10 3/4" |