Hi Bama and
I'm verily sure
Boler never made a single piece,
fiberglass floor, model. They were all plywood floors. However the floor may have been painted or even fibreglassed overtop of the wood. A look at the underside may show you. Is this trailer new to you? If so congratulations!
There seems to have been some modification to it. Larger roof vent and something added to the closet area, shown by the vent beside your door.
Air Conditioning?
Cheers,