Floater frame. 3 decades ago this stuff all got tossed in the dumpster because the artists discovered it was even cheaper to just nail lathing strips to the side of the canvas.
I had an artist from Canada in and he was looking for floaters. I told him I didn't carry them because they were a fad that would hit the dumpster again as they did decades ago. Showed him the price on my ready made frames and explained that nothing could be done for less money anywhere. He said the prices were good but he was wondering if I could get floaters. I once again told him nothing could be less expensive than the ready mades I make myself and he explained it wasn't about price but he just wanted floaters.
I told him I would order in some floater moulding and make up frames for him but they would be double the price of my ready mades. He became quite loud and insistant saying "No, No, They are ALWAYS Half the Price of Real Frames". I pointed in the direction of Home Depot and explained how he could just use lathing strip the way they did the last time Floaters went out of popularity.