8FT x 4FT Extension for MONT Black Greenhouse ventilation This customizable system is portable

This customizable system is portable

This window

facilitating better access and improved ventilation

leaf miners

8FT x 4FT Extension for MONT Black Greenhouse ventilation This customizable system is portableOverview Expand your MONT greenhouse as your gardening needs grow with our versatile 4 foot extension kit. Matching the high standards of the MONT line, this extension is made in the USA and designed to integrate seamlessly with your existing black framed greenhouse. Designed for Your Convenience Quickly assemble your greenhouse extension and enjoy the added space with a new 2ft x 2ft roof vent featuring an automatic opener for optimal air