FC40R1169/U No Image low-temperature limit/cut-out thermostat with a

low-temperature limit/cut-out thermostat with a 6 foot capillary sensing element

and a Combination

These Honeywell Home High-Performance Return Grille Filters from Resideo help trap airborne dust

It detects temperature drops below a fixed safety value (setpoint)

Class 3 Wet Requirements as Specified by NEMA Standard DC-20

FC40R1169/U No Image low-temperature limit/cut-out thermostat with aThese Honeywell Home High Performance Return Grille Filters from Resideo help trap airborne dust, pollen, mold spores, bacteria and other allergens that pass through your HVAC system. They also last up to three times longer than standard one inch filters, which mean less maintenance for improved indoor air quality.