Increase the air circulation in your Palram Harmony greenhouse with an additional vent kit. This additional air vent will help reducing heat buildup and lower humidity levels. Supplement your Palram greenhouse and improve air circulation to keep your greenhouse cooler on warm days. Provides additional air ventilation Helps regulate temperature and humidity levels Manual adjustment for variable airflow Compatible with Palram Harmony Greenhouse Series Can be fitted with the Palram’s Automatic Roof Vent Opener for optimal airflow Model: #701769
