Saw this while I was doing a PM on a gas furnace this morning. That is tape you use to seal up boxes when you mail them.
Not as lean, not as mean, but I'm still a hardcore, ass-kicking, hard charging Marine! Oohrah!
Saw a heater yesterday that had blue masking tape on the b-vent.
If it works
In all fairness that is "PVC" tape.
They could've at least done a little neater job...........
Tough times don't last...Tough people do.
Midnight Sun Astrophotography