No markings anywhere on this door, bushing in the bottom of the pivot has worn out from bearing the weight of this door since the early 1970's
Dave Sr. from SWISCO responded:
October 16, 2014
Your door pivot looks like it's off of an older Arch commercial door. Take a look at our 79-127 and 79-128 pivots. I believe one of those should work for you, but check them out to make sure.
A quick learner from Lexington, KY says:
October 16, 2014
I saw that one but I wasn't sure if it had the little tongue at the bottom like this one.
Dave Sr. from SWISCO responded:
October 20, 2014
No, the 79-127 and 79-128 do not have lips on the bottom. I don't believe that version is even still available. Either way, it shouldn't affect the operation of the door. Just make sure the rest of the hardware in these pivot kits match up to yours.