This specific model (325-5L-1) typically requires a 12A39 vent limiter for indoor use without a vent line to the atmosphere

Optimized Airflow: Precision-molded ventilation slots ensure the thermostat maintains its factory calibration through consistent airflow

Measuring 10" x 8"

While this is a single-timing sequencer

Belimo TFRB24-SR Actuator R-410A This specific model (325-5L-1) typicallyThe Belimo TFRB24 SR is a compact spring return actuator designed for the fail safe operation of dampers and valves in HVAC systems. Providing 22 in lb torque, this proportional control actuator operates on a 24VAC DC power supply and accepts a 2 10 VDC control signal for precise modulation. Built for high reliability applications, it features brushless DC motor technology, ensuring consistent torque delivery and energy efficiency while eliminating