Visual Identification: Brown color coding ensures you have the correct 2-7# spring before starting the teardown

ensuring the superheat is accurately maintained for larger capacity 5-ton coils

optimized for high-volume airflow and large area heating

The unit includes a 2-inch break-off shaft with a universal "A" stem profile and comes with multiple shaft adapters to accommodate original equipment dials

you know that consistent flame performance is the backbone of any reliable heating system

Zonefirst AOBD-12X6 Damper Freon Visual Identification: Brown color codingThe Zonefirst AOBD 12X6 is a professional grade Automatic Opposed Blade Damper engineered for high performance HVAC zone control. Developed for precision airflow management, this 12" wide by 6" high unit features an opposed blade configuration, which is superior for reducing air turbulence and providing more linear flow characteristics than parallel designs. It comes factory equipped with a heavy duty 24Vac Power Open Power Closed Actuator mounted on