The Palram - Canopia Side Louvered Window is designed to improve the air circulation and help control the temperature in most Palram - Canopia greenhouses. The shutters are controlled manually for variable airflow to help aid in cooling on warmer days. When paired with the roof vent, the louvered window can provide improved air circulation. Additionally, the Palram - Canopia Side Louvered Window can be fitted with the Automatic Louvered Window Opener to provide the ideal airflow into the greenhouse. Additional adjustable ventilation provides and increases airflow and aids cooling during warmer days Interior shutters are operated with manual handle to control of the airflow Easy to install, replaces existing polycarbonate panels Fits most Palram - Canopia greenhouses: Mythos Hybrid Harmony Balance Essence Octave Americana Snap & Grow Chalet Oasis Glory Bella For EcoGrow, Hobby Gardener, Grand Gardener, or Prestige greenhouses, please see this Side Louvered Window model. 1 Year Limited Warranty INSTALLATION MANUALS Palram - Canopia Side Louvered Greenhouse Window Installation Manual