The furnace ignitor is designed to be a compatible replacement for Robertshaw part 41-405. These flat hot surface ignitors can be used in applications including boilers, furnaces, rooftops, water heaters, swimming pool heaters and more. The ignitor is manufactured with an improved silicon carbide composition that lasts longer and has a better performance than former silicon carbide ignitors. This ignitor is compatible with OEMs Detroit Radiant (part. 201D), Norton (part. 201D, 271P) Smith HB (part. 50018), Viessman (part. 9302094), White Rodgers (part. 767A361), York International (part. 025-27766-000, 025-27774-000, 025-29043-000, 025-29050-000).