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.
Common venting through side wall
I've ran into a job where two Reznor UDAP-60's are common vented through the sidewall. I can't find anything where it says NOT to do it, but I'm having a hard time finding out if it's acceptable. The vent connectors are 4" and the common vent is increased to 5".
Any input, good sir?