5" x 5" large-format dimensions effectively hide old mounting holes and paint lines

Common Questions: Is the SR3B-05 compatible with 8-pin relays

Universal Compatibility: Fits common furnace models including DGAA056

though the system limit is often determined by the tubing or valve cores used (typically 800 psi for valve cores)

Armstrong Furnace R46827-001 Ignitor 5" x 5" large-format dimensionsThe Armstrong Furnace R46827 001 Ignitor is a high performance silicon nitride hot surface ignitor engineered for precise ignition in residential heating systems. This direct OEM replacement part is critical for restoring reliable operation to Armstrong gas furnaces and compatible AirEase or Ducane equipment. Unlike older silicon carbide models, the nitride construction offers superior durability and resistance to oxidation, ensuring consistent