Sigma Greenhouse Roof Vent

Grow a flourishing garden unbothered by the sweltering summer heat. Easily control the airflow into your Sigma Greenhouse to bring in a refreshing breeze that helps your plants grow healthy and strong. Sigma Roof Vent Features: Made from galvanized steel and polycarbonate for long-lasting durability Manual opening so you can control the ventilation of the greenhouse Rust-resistant and low maintenance year-round Simple design for fast and easy installation 3' × 1.4' Please note: this window only fits Sigma Greenhouse models. The Planta Sigma Roof Vent is a fantastic add-on for your Sigma Greenhouse. It will efficiently increase air circulation, maintaining a comfortable temperature, which is essential for healthy plant growth and disease control. The number of suggested windows is determined by the size of the greenhouse, the environment and growing zone in which you live, and the plants you would like to cultivate. However, the following numbers are a general guideline: Sigma Urban (10x13): 2-4 windows Sigma 20 (10x19.5): 4-6 windows Sigma 26 (10x26): 6 windows Sigma 32 (10x32): 6-8 windows It's recommended to install an even number of roof vents on either side of the greenhouse for optimum airflow.