Automatic Louver Window Opener for Grandio 10X15 When it gets cooler

When it gets cooler

these wood frame greenhouses offer superior insulation and stability

Snow Load 15

Whether heating

Yes PRODUCT FABRIC Polycarbonate SHADE CLOTH INCLUDE No # OF PEOPLE FOR ASSEMBLY 2

Automatic Louver Window Opener for Grandio 10X15 When it gets coolerDESCRIPTION The Grandio Automatic Louver Window Opener adjusts airflow based on temperature changes. This opener features a metal cylinder with an expanding mineral that pushes a piston to open the vent when heated. As it cools, a spring closes the vent. Attach it to the left side of your louver window for optimal cooling. Please call to order a Right Side Orientation Auto Opener for Louver Windows purchased prior to September 1, 2016.