You have to completely disassemble the range hood to remove ALL of the plastic protective film. It is in every crease of the rangehood. It’s as if a different production line made each piece and then had it wrapped, then didn’t remove the film prior to assembly and packaging. What should of been an hour install, turned into 6 hours of disassemble and reassemble with several hours of removing the film and the glue from the pieces rubbing together.