MD8TU BROAN-NuTone 8" Univ Auto make-up air Damper 🌬️ MD8TU BROAN-NuTone 8" Universal Automatic Make-Up Air Damper Ensure fresh airflow and code compliance with the BROAN-NuTone MD8TU—an 8-inch universal make-up air damper that automatically introduces outside air when your exhaust system runs. Ideal for energy-efficient homes that require balanced ventilation. 🛠️ Technical Specifications: Diameter: 8 inches Voltage: 24V control signal activation Air Direction: Fresh outside air intake Motor Type: Low-voltage actuator Construction: Galvanized steel housing Weight: 6.12 lbs ✅ Features: Automatic Operation: Opens when exhaust fan activates to maintain neutral indoor pressure Universal Fit: Designed for use with range hoods, bathroom fans, or whole-home ventilation systems Code Compliant: Meets IRC and IMC mechanical ventilation requirements Energy Efficiency: Helps reduce HVAC load by regulating intake airflow only when needed Quiet Actuation: Motorized damper opens smoothly with minimal noise 🧩 Applications: Use with 8" ducting in residential or light commercial settings Compatible with BROAN-NuTone SmartSense™ and most 24V ventilation control circuits Ideal for tightly sealed homes requiring controlled air exchange