

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The Siemens 331-2973 Number 4 Pneumatic Damper Actuator features a four-inch stroke and is designed for efficient airflow control in HVAC systems. This actuator is made with an all-metal body for durability. It operates with a pneumatic piston, effective for managing various dampers including outdoor air, return air, and exhaust systems.
This actuator is UL recognized for fire and smoke applications, making it suitable for critical HVAC tasks.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!