Automatic Louver Window Opener for Grandio Tunnel & Arch showcasing exceptional quality and attention

showcasing exceptional quality and attention to detail

ASSEMBLED EXTERIOR DIMENSIONS HEIGHT (FT) 8'3" ASSEMBLED EXTERIOR DIMENSIONS WIDTH (FT) 8'7"

Easy installation over the top of your greenhouse or shed

Keeps plants healthier with constant dripping

Size: 13'2" (W) X 9'8"(H) X 12'10"(L) X 9

Automatic Louver Window Opener for Grandio Tunnel & Arch showcasing exceptional quality and attentionDESCRIPTION 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.