the Armstrong C3510-12 is identical to the 1AV-3/4-300 model

It features a 5-inch diameter body and a 1/2-inch by 2-inch shaft with a flat to prevent slippage of the furnace blower fan blade

When you're out in the field servicing multi-stage York units or high-capacity air handlers

Key Benefits: Precision Airflow: The 12-blade design is optimized for high-efficiency air movement in confined HVAC cabinets

Honeywell C7027A1049 Flame Detector 322838-752 the Armstrong C3510-12 is identicalWhen you're out in the field dealing with industrial burner assemblies, you need a C7027A1049 Flame Detector that provides precise ultraviolet flame detection without the nuisance of false signals. This Honeywell Minipeeper is the industry standard for monitoring coal, gas, and oil fired burners. Engineered for a seamless fit, it mounts directly onto a 1 2 inch sighting pipe using its integral collar and includes a 1 2 inch NPT spud connector for