Janssens Spindle Opener
Price range: $149.00 through $238.00
Features
- Gives you full manual control over how much your roof vent is opened or closed
- A great choice for windy locations where a more secure vent setup is preferred
- Useful for greenhouses with exhaust fans, where keeping roof vents closed can help direct airflow more intentionally
- Lets you adjust ventilation as needed instead of relying on an automatic opener
- Optional: 5′ handle to adjust the spindle opener
What's Included
- Spindle opener
- Optional: 5' handle
- Hardware
Compatability
Works on Janssens roof vents
Secure Checkout
Nationwide Delivery
Veteran-Owned
Real Greenhouse Owners
Personalized Planning Help
Description
The Janssens Spindle Opener is a manual opener for Janssens greenhouse roof vents. It’s a good option for gardeners who want more control over ventilation and prefer to decide exactly when, and how far, the window should be opened.
This style of opener is especially useful in windy locations because it helps keep the roof vent in a more secure position rather than relying on automatic opening. It can also be a smart choice for greenhouses using exhaust fans, where keeping roof vents closed can help direct airflow more effectively. For easier adjustment, a 5-foot handle is also available as an optional add-on.
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