I purchased a locally made frame because it was a simple black with no words and cheap. I found that the frame would not accept an Ontario standard plate. WTF I thought, so I phoned them, a local call.
Working my way through the hierarchy of the company I finally spoke to the engineering manager, he told me I must me doing it wrong, lets face it how many ways can a plate go into a frame. I finally convinced him I knew how it happened, as I had worked in the plastic mold industry for years. He finally admitted he really did not know to much about it, obvious to me from the first minute. Maybe he gets them from China and sticks made in Canada on them and they fit the Peking plates, who knows but not fitting an Ontario plate, gimme a break.
I have to phone him back as I want a decent plate frame that works.