Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Does any one know if in NFPA 54, or the IFGC it lists the minimum gage metal needed for combustion air into a boiler room? The room in question has on 400 mbh boiler. I can’t find a minimum size listed. Thanks to all