Suburban Furnace Burner Orifice 180306
Metric Threaded Orifice
Stamp Number: 53
Applicable to Models (Links In Blue If Available): Please Note:All Suburban Serial Numbers manufactured after January 1990, will be nine digits. The first two (2) digits signify the year of manufacture. The next set of digits, indicate the week of the year and the remaining digits are serial numbers.For Example: Even though numerically higher, 912000060 is lower than serial number 014103973 due to the year of manufacture.