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 adjustable 90° elbow is constructed of four sections for smoother bends and less resistance. The elbow adjusts from 0° to 90° easily in order to clear rafters or ceiling joists.
Model | Size | A | B | C | D |
---|---|---|---|---|---|
3EAL | 3" | 5" | 5 1/4" | 1 1/2" | 8" |
4EAL | 4" | 5" | 5 1/2" | 1 1/2" | 8 3/4" |
5EAL | 5" | 5 1/2" | 6" | 2 1/4" | 9 1/4" |
6EAL | 6" | 6 1/2" | 7" | 2 1/2" | 10 1/4" |
7RAL | 7" | 7 3/4" | 8" | 3" | 12 1/4" |
8RAL | 8" | 8 3/4" | 9" | 3 1/3" | 13" |