Dayton
Dayton 53DR13 20 in Backdraft Damper 22-1/2 in x 22-1/2 in opening
A 20-inch backdraft damper with an extruded aluminium frame and G-90 galvanised tie rods fits a 22-1/2 by 22-1/2 inch wall opening and provides 2.519 square feet of free area
- Prevents reverse airflow with gravity-operated aluminum blades
- Fits 20 in fan in 22-1/2 in square wall opening
- Extruded aluminum frame with G-90 galvanized tie rods resists corrosion
- Provides 2.519 sq ft free area for efficient ventilation
- Rated for air velocities up to 2500 FPM
20 in Backdraft Damper for Wall Shutter Installation
The Dayton 53DR13 is a backdraft damper designed to fit a 20 in fan diameter and a 22-1/2 in x 22-1/2 in wall opening. It features an extruded aluminum frame with G-90 galvanized tie rods for corrosion resistance. The unit mounts vertically on a wall and provides a free area of 2.519 sq ft for airflow. It is supplied new and ready for integration into HVAC systems.
Suited for Gravity-Relief Ventilation
This damper suits installers who need automatic airflow control without powered actuators. It opens under positive pressure and closes by gravity when the fan stops, preventing backdrafts. Buyers who require motorised operation, horizontal mounting, or a different opening size should look at alternative shutter models. The fixed 25 in x 25 in overall dimensions also limit use in confined wall cavities.
Sustained Operation at Rated Velocity
Under continuous airflow the damper blades remain open up to the maximum velocity of 2500 FPM without flutter. The galvanised tie rods and aluminium frame maintain alignment over long duty cycles, reducing wear on pivot points. The 5 3/4 in open depth allows full blade travel without binding. Performance stays consistent as long as the mounting surface remains rigid and the opening matches the specified dimensions.
Highlights
- Prevents reverse airflow with gravity-operated aluminum blades
- Fits 20 in fan in 22-1/2 in square wall opening
- Extruded aluminum frame with G-90 galvanized tie rods resists corrosion
- Provides 2.519 sq ft free area for efficient ventilation
- Rated for air velocities up to 2500 FPM
Specifications
| Brand | DAYTON |
|---|
Questions about this item
What size wall opening is needed for the 22-1/2 in x 22-1/2 in shutter?
The damper requires a 22-1/2 in x 22-1/2 in opening in the wall for proper installation.
Will the aluminum frame and galvanized tie rods resist corrosion when paired with older steel ductwork?
The extruded aluminum frame and G-90 galvanized tie rods provide corrosion resistance compatible with existing steel duct connections.
How can I confirm the damper is operating correctly after mounting it vertically on the wall?
Verify the blades open freely at airflow up to 2500 FPM and close tightly by gravity when the fan stops.
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