12.3m. Chevrolet copaci has about 3. 1 front and rear bumpers, hood 1.75, roof 2. 1, rear fender 3.4, two doors and side skirts. Generally,12.3m film can be used. Car film is a kind of film-like object stuck on the front and rear windshield, side window and skylight of the vehicle. This film-like object is also called solar film or heat insulation film.