Hot Surface Furnace Ignitor 5 1/2" Lead Length The Robertshaw 41-400 Series Norton Hot Surface Ignitors deliver dependable ignition in heating systems of every description. From furnaces and boilers to rooftop heaters, infrared burners, unit heaters, water heaters and many other types of HVAC equipment. The 41-400 Series Hot Surface Ignitors are made of high-purity recrystallized silicon carbide (Crystarâ„¢) which combines physical and thermal strength with stable electrical properties. The 41-400 Series are designed to reach ignition temperature(s) within 17 seconds. They have 18-gauge nickel chrome lead wires embedded and metalized in place for maximum holding strength and electrical conductivity. The lead wires are also enclosed with a special high-temperature fiberglass insulation providing total electrical protection. NOTE: All 41-400 series ignitors are 120 VAC models. Some hot surface modules are rated for 208/240 volts input, however they step the voltage to ignitor down to 120 VAC. Replaces: EATON FI-405 Functional HB SMITH 101344 Functional HB SMITH 1148245 Functional HB SMITH 50018 Functional HEIL QUAKER 1001344 Functional HEIL QUAKER 1148145 Functional JOHNSTONE SUPPLY L37-812 Exact JOHNSTONE SUPPLY L37-812 Functional LENNOX INDUSTRIES 98P77 Functional LENNOX INDUSTRIES 98P77 Exact NORTON 201D Functional NORTON 271D Functional NORTON 271P Functional NORTON MB457026 Exact NORTON MB478267 Exact REPAIR CLINIC 552034 Functional SUPCO SIG-405 Functional TEMP CONTROLS 9302-094 Exact UNI-LINE 63470 Exact Uni-Line UPC number. Number may appear preceded by Uni-Line's vendor i.d. number, 662013.ex. 66201312345. UNKNOWN 98P7701 Functional VIESSMAN 9302-094 Exact WHITE-RODGERS 767A-361 Functional YORK INTERNATIONAL 025-27766-000 Exact YORK INTERNATIONAL 025-27774-000 Exact YORK INTERNATIONAL 025-29043-000 Exact YORK INTERNATIONAL 025-29050-000 Exact