(Kit #1) has the old style burner access gasket which makes kit #1 applicable to the SF-20F between serial numbers 934701426 and 094101431, the second (Kit #2) has the new style burner access gasket which is applicable to the SF-20F above serial number 094101431. Please verify which kit is applicable to your furnace prior to ordering. For parts outside of these serial numbers please reference the exploded parts view item links below the tune-up kits. *See serial number note at the bottom of the page* SKU: SF-20FTKIT
Tune-Up Kit #1 Contents: (links in blue)
Tune-Up Kit #2 Contents: (links in blue)
*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.