Yeah, that cab smells Fisher: Screen, bottom material, cutouts, staples; everythig except rubber rear feet. There, you can see where blocks were lost.
I've not paid much attention to the later receivers of any series so, as Dave mentioned, this may fit the TA series of receivers as well. What is certain is that Fisher face plate dimensions was a common denominator across many different models and so long as the front fits, the rear is often ignored as well as the cutouts. Of course the height of the cab had to accommodate the tranny and tubes as well.