Suburban Furnace Motor w/ Gasket 521230 (SF Series) Suburban furnace motor with gasket for model: SF-20 SF-20F (3 INCH MOTOR) (ABOVE SERIAL NO. 012205202) SF-25 SF-25F (3 INCH MOTOR) (ABOVE SERIAL NO. 012106952) SF-30 SF-30F (3 INCH MOTOR) (ABOVE SERIAL NO. 012003742) SF-20Q/FQ 25Q/FQ 30Q/FQ 20VHQ/V... See More