2 Pack for RV 232261 Suburban Furnace Heater Sail Switch 233382 – 525003 Features: Application: Sail switch tells the furnace to ignite the propane. 232261 is a low airflow switch designed for SF series RV furnaces. If the blower fan on your furnace runs but heat is NOT coming on or the furnace runs on and off intermittently, it’s very likely that the sail switch is either dirty or goes bad over time. For the latter situation, replace the sail switch. Fitment: FOR Suburban SF Series furnace models: SF-20, 25, 30, 35, 42; SF-20F, 25F, 30F, 35F, 42F; SH-42, 42F. Technical Specification: Power Rating: 0.1A, 125-250V AC, 0.5A, 30V DC; Switch Dimensions: 5/8″ x 1-1/8″; Arm Length 3-1/8″; Weight: 0.02 lbs. .