Hi, Are you talking about the open vents that allow heat from the first floor to rise up to the second floor--such as are found in old farmhouses with wood stoves? If so, I saw them recently in a mail-order catalog.......it might have even been the Vermont Country Store, but I can't remember. (I'm on too many catalog mailing lists--they tend to blur together after a while.) I will look thru the pile and see if we still have that catalog. Deb Bledsoe