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.
Size | Product No. | Model No. | A - Inner Wall Dia (in) | B - Outer Wall Dia. (in) | C - (in) | D - (in) | E - Installed RISE (in) | F - Installed OFFSET (in) |
---|---|---|---|---|---|---|---|---|
6" | 276215 | 6USP-E45 | 6 | 6 7/8 | 3 | 3 7/8 | 4 7/8 | 1 3/4 |
7" | 277215 | 7USP-E45 | 7 | 7 7/8 | 3 1/4 | 4 1/8 | 5 1/4 | 2 |
8" | 278215 | 8USP-E45 | 8 | 8 7/8 | 3 1/2 | 4 3/8 | 5 5/8 | 2 1/8 |