Industrial-Grade Durability: Features a NEMA 4X rated enclosure to protect internal electronics against moisture and environmental debris

Rugged Construction: Built to withstand the high-cycle demands of commercial unit heaters and air handlers

Featuring a robust door interlock in the ON-position

Always verify your existing wheel's blade pitch before installation

Resideo ZD12X24TZ Damper 321142-301 Industrial-Grade Durability: Features a NEMAThe Resideo ZD12X24TZ is a heavy duty, parallel blade zone damper designed for precision airflow management in rectangular ducts. Built with a power closed spring return open configuration, this 12" x 24" unit ensures fail safe operation by defaulting to the open position upon loss of power. The 24Vac synchronous motor is side mounted on the 24 inch dimension, featuring a high torque 71 in oz output and integrated Kevlar gearing for industrial grade