Need more air circulation? Add a Rion Roof Window to your greenhouse. Note: One roof window per 4 feet in length is recommended for optimum ventilation.

Rion Roof Windows / Vents
Roof Window for all Professional Series GH40 Greenhouses -available in green or white (with adjusting lever for Professional Greenhouse 40 series - they are oversized)	$122.55 Free Shipping	Color Quantity:

*Shipping costs are calculated for orders shipped within the lower 48 states. If order is being shipped to anywhere other than the lower 48 states, additional shipping costs may apply. Contact our Customer Service Help Desk for questions.

RionGreenhouseKits.com sells only the highest quality Rion Greenhouses for the home gardening enthusiast. The Rion greenhouse is the most durable and best-designed greenhouse kit on the market. In addition, the exceptionally attractive structure with its dark green color frame makes it a great asset to any home or garden. It is the easiest greenhouse unit to assemble, the best insulated greenhouse kit in its class, and above all it is the best value for your money--professional quality at a hobbyist price!

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