I haven't run into this before but when I ordered a cop of this float frame it came in too small for the canvas. They cut the dimensions I gave them to the inner wall of the frame instead of to float wall as if the float wall were a rabbet. I was told that I should have specified that my dimensions were sight size. Seems to me sight size means the frame has a rabbet and then is not a float frame. I guess now I know how this company views this frame but I'm sure I've ordered it elsewhere without this problem. What say you?