HI all, I'm a noob. I have a Supreme Electro Hygiene metal upright. Information plate between rear wheels on rear of cleaning head has the following: Ser. #B84D 03404, Model 903, 4.5 amp, cleaning machine 760G. It has a light grey or off white bag with red lettering. Would like to know what all this means. Also, need to know what belt and brushroller type/part numbers are available for this otherwise very clean vacuum cleaner. I understand from looking on the net that there are two types of brushrollers (regular and ball bearing) that might fit this vacuum as well as different belt types for the different brushroller types. On this I don't know from Adam. The brushroller is 13" long and is of the square end cap type. Any help would be appreciated.