Automatic Louver Window Opener for Grandio 10X15 Large assortment of connectors for

Large assortment of connectors for the plants to be fastened to the string

When it gets cooler

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

Work for Royal or Junior Victorian Greenhouses: the black tube is filled with special parafine oil - which expands when the temperature reached around 72º and the piston will push the window open up to about 14"

3 tiers measure 4’ x 4’ x 5

Automatic Louver Window Opener for Grandio 10X15 Large assortment of connectors forDESCRIPTION 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.