Model 6672D does not include a light fixture, so it is not the fan model number you need to be concerned about so much as the light fixture model number. If you remove the light kit from the fan, you may be able to find the model number of the light kit. It might also be on a tag inside the light kit, so look there before you remove it. You can also email us some pictures of your fan and light and maybe we can help identify it. If you cannot get the correct glass for the fitter that is on your fan, you can always replace both the fitter and the glass.