Automatic Roof Vent Arm Opener for Rion Greenhouses grey built-to-last thanks to outstandingly durable

built-to-last thanks to outstandingly durable materials

hinged double doors that are high (6'6") and wide

Non-rusting

Solarium Patio Enclosure with Grey Frame

Manufactured from 100% FSC certified cedar wood

Automatic Roof Vent Arm Opener for Rion Greenhouses grey built-to-last thanks to outstandingly durableAutomatic Roof Vent Arm Opener Automatic Climate Control for EcoGrow, Prestige and Grand Gardener Greenhouses ONLY The Automatic Vent Opener for Rion Greenhouses, was designed to automatically control temperature and humidity levels. As the air inside your Rion Greenhouse warms, the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the temperature cools. All you need to do is to install it on your roof