Shutter Cover
![Shutter-Blank-Edited Left Angle Shutter Blank for EcoTight Shutter or OEM Shutters](https://www.doublel.com/wp-content/uploads/2021/05/Shutter-Blank-Edited-Left-Angle-1.jpg)
Features
– R Value of R3
– Flex Tip U- Channel
– Custom Sizing
– Translucent Panel
Benefits
– Simple, unique, and effective “common sense” way to winterize fan
shutters. (works with Double L AND other OEM shutters)
– Panel stops cold air leakage and shutter flutter
– Reduces heater run time and lowers operating costs
– Plastic panel is light & easy to handle for storage in off-season
– Snap-fit design eliminates having to remove fan shutters to winterize
– No more fan shutter damage due to handling / storing in off-season
– Allows natural light to enter the building
– Designed for expansion and contraction
Hecho en los Estados Unidos
FLIR IMAGES OF BEFORE AND AFTER USE OF SHUTTER BLANK
![FLIR0582 FLIR Photo at 2400 head finishing site in eastern Iowa](https://www.doublel.com/wp-content/uploads/2021/05/FLIR0582.jpg)
Above FLIR photo was taken at a 2,400 head finishing site in eastern Iowa when the outside temperature was below 0° F temperatures.
54” fans are shown with cold air leakage coming into the facility – shown by the purple areas on the shutter front.
![FLIR0556 FLIR Photo at same finishing site with Shutter Blank](https://www.doublel.com/wp-content/uploads/2021/05/FLIR0556.jpg)
Above FLIR photo was taken at the same finishing site in eastern Iowa 15 minutes after the Shutter Cover was installed on the 54” fans.
Note the reduction in cold air leakage and insulation provided on the fans depicted by the uniform yellow / orange tones captured by the FLIR camera.
![Snapping-Shutter-Blank-in-place Snapping Shutter Blank in place](https://www.doublel.com/wp-content/uploads/2021/05/Snapping-Shutter-Blank-in-place.jpg)
![Shutter-Blank-Custom-Sizes Shutter Blank Custom Sizes](https://www.doublel.com/wp-content/uploads/2021/05/Shutter-Blank-Custom-Sizes.jpg)
![Grower-Photo-Shutter-Blank--LOWRES Shutter Blank for Grower](https://www.doublel.com/wp-content/uploads/2021/05/Grower-Photo-Shutter-Blank-LOWRES.jpg)
PATENTE PENDIENTE
![poultry window](http://www.doublel.com/wp-content/uploads/2023/02/Screenshot-2023-02-14-101446.png)