The Armstrong Furnace R37520B002 Rollout Switch is a critical safety component designed for precise thermal monitoring within residential gas furnaces

Noise Suppression: Advanced EMI and RFI protection meets North American and European standards for reduced electronic interference

Precise Pressure Regulation: Features an adjustable LP regulator spring capable of 8" to 12" water column settings for accurate fuel delivery

Optimal Airflow: Precision-vented casing ensures the enclosed thermostat maintains accurate sensing and response times

Johnson Controls A19AAC-38 Utility Thermostat 30067439-890 The Armstrong Furnace R37520B002 RolloutJohnson Controls A19AAC 38 Utility Thermostat, 120 208 240 Vac, 50 280 Degree Temperature Range, 2 Degree Differential, SPDT, Bulb Style 1, Screw Driver Range Adjuster A19AAC 38 is identical to A19AAC 38C