Suburban Mfg Furnace Limit Switch For Sf Series. It is compatible with Suburban's SF-20 SF-20F SF-25 SF-25F SF-30 SF-30F SF-35 and SF-35F models. Includes a 90 day limited warranty. Features of Suburban Mfg Furnace Limit Switch For Sf Series Designed for use with RV furnaces Compatible with Suburban's SF-20 SF-20F SF-25 SF-25F SF-30 SF-30F SF-35 and SF-35F models Includes one limit switch per package 90 day limited warranty Package Contents: Suburban Mfg Furnace Limit Switch For Sf Series Suburban Mfg 231630: 231630 Furnace Limit Switch For Sf Series