[BK001]

Originally Posted by New Englander

Oh shucks. You're making me blush.

Well then my job is done!

[photo1902]

Originally Posted by alanmcdonald

Turns out the vent is for the central vacuum system that was installed after the house was built. Thanks everyone for your help.

So much for all the "experts" weighing in. Glad you discovered the source.

[alanmcdonald]

Thanks, everyone. I am having the vacuum company install a new vent cover.