Duct Air Flow Switch NEMA4 HVAC Weatherproof Box SPDT Paddle size 3.2 x 6.9" SW | eBay
Thermolec | Air Flow Switch
Mechanical Air Flow Switch
Aprilaire 4592 Airflow Switch
Air Flow Switch, Model No.: BIMCO -1001, Model Name/Number: BIMCO-1001
Air flow switch - ITK
Air Flow Switch - 1/2" Cleveland - Accudraft
Model AAFS | Adjustable Air Flow Paddle Switch has a stainless steel vane, galvanized steel base, and ABS enclosure. Applications include air flow proving in HVAC systems. | Dwyer Instruments