Engineered specifically to replace the manual vent arm in any Palram / Snap & Grow, or RION model greenhouses. Opens vent at warm temperature, Closes when temperature cools.
Calibrated spring tensions
Resists wind damage when opening or closing
No need for electricity or controllers
Strong, durable, corrosion-resistant components
Works with all Palram, Rion, Snap & Grow model greenhouses.
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