Tools & Supplies Greenhouse and Tunnel Supplies Vents and Vent Openers
Two vents in a high tunnel.
Vents and Vent Openers
Maintaining proper ventilation is key to the success of greenhouse plants. It helps regulate temperature, provide fresh air for photosynthesis, discourage pests, and encourage pollination. Johnny’s offers greenhouse vents and openers that automatically open in response to temperature increases, so your plants stay in their comfort zone. Choose from models designed for greenhouse and cold frame applications.
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Automatic Ventilation Kit High Tunnel Kits
Optional add-on for the Bobcat high tunnel kits.
Out of Stock
Optional add-on for the Bobcat high tunnel kits.
Provides additional greenhouse ventilation in hot conditions.
Provides additional greenhouse ventilation in hot conditions.
Universal, for greenhouse and cold frame applications.
Universal, for greenhouse and cold frame applications.
Provides additional greenhouse ventilation in hot conditions.
Provides additional greenhouse ventilation in hot conditions.
Keep your cold frame plants in their "comfort zone."
Keep your cold frame plants in their "comfort zone."
Provides additional greenhouse ventilation in hot conditions.
Out of Stock
Provides additional greenhouse ventilation in hot conditions.
Provides additional greenhouse ventilation in hot conditions.
Out of Stock
Provides additional greenhouse ventilation in hot conditions.
1 - 7 of 7