Nope, ½” don’t get it:
http://www.pbase.com/dennygraham/image/136343469/large
Yep, 3/4” do get it:
http://www.pbase.com/dennygraham/image/136343490/large
This is a ’54, 235 damper.
Denny Graham
Sandwich, IL


Denny G
Sandwich, IL