AirFlo 16 inch Motorized Backdraft Damper Shutter

National Fan Co.
Build Time:
10 to 15 Business Days ?
Ships By:
FedEx Ground

Build Time

The product Build Time you see represented on this site is only a typical number of days the manufacturer states it needs to build the product(s) when ordered. Build times are based on business days (excludes weekends & holidays).

The build time does not include the time it will take to ship the order to you (the customer). If an order has multiple items and comes from multiple warehouses, you may receive part of your order on one day, and then receive the remaining part(s) of your order at a later date.

*Please be aware that seasonal demand of certain equipment may cause build times to run longer than what is typical.

LIST: $355.57
Only $235.30
Quantity Unit Price You Save
6-9 3%
10+ 5%





Blade Seals: Full length vinyl weather strip

Sturdily constructed from all aluminum extrusions

Damper motor factory installed

Maximum 8 sq. feet per motor

Positive seal keeps leakage less than 1%

Blades are 0.5" extruded aluminum with Vinyl gasket

Double panel available 30" and up

Standard multi products motor.

Please select Voltage by selecting from the drop-down box above.


NOTE: Shutters are designed to be opened BEFORE turning the fan on.

DIMENSIONS: 19" x 19" x 8.5"

Rough In-Opening Dimensions: 16" x 16"

Model No.:
SR3116X16 -1MTRHP -115V -RUSH
Dampers, Shutters & Weather Hoods
Limited Warranty:
1 Year Limited
Notice: Manufacturer's products features and specifications are subject to change without notice.
California Residents: warning WARNING- This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit


Ask a Question
  • Can I use this for an fresh air intake for a 5 ton air conditioner roof top unit, outside mount with motor on the inside. I am trying to use this shutter as an economizer .

    Yes, as long as the motor on this shutter is protected from wet weather conditions.

  • What exactly doe this mean? Does it mean that the shutters have a delay in the design? **NOTE: Shutters are designed to be opened BEFORE turning the fan on. How much Airflow can the louvers handle, while opening? What kind of switch is needed to use to open the shutters needed, or can it be connect in series to a single switch? If you can use a single switch, can you use a standard light switch? In other words, does it open when toggled on, and close when toggled off, or does it require a different type of switch connection? Is there a delay that switch that you can recommend, and a correct electrical installation process, if you want only 1 switch?

    The note just means that a delay switch should be connected to the fans power, so that it allows the shutter to open first.

  • What is the difference between the inside and outside mount options?

    This has to do with the mounting flange around the outside of the damper / shutter.  Inside or outside mounting is about whether you want to mount the shutter from the inside of your building (mounting flange on inside wall), or from the outside (mountinf flange on outside of wall).