the SWT1272 features a 3-inch insertion depth and a snap-disc design that ensures a rapid response to airflow restrictions or over-firing conditions

Constructed with heavy-duty materials to prevent flexing under high-torque load conditions

Technicians utilize this lockout control module to resolve persistent ignition failure codes and flickering pilot burners

11 matches your service manual

tripped breakers during startup

Williams 9929 Kit R-407C the SWT1272 features a 3-inchThe Williams 9929 is a professional grade oval vent starter kit engineered specifically for Forsaire top vent furnaces, including models 3508, 5008, 5508, and 6508. As a veteran technician, you know that transitioning from an oval heat shield to a standard round flue requires precision components to maintain draft integrity and structural stability. This OEM Williams furnace part provides a streamlined oval to round adapter solution, ensuring your gas