Our Automatic Roof Vent requires no electricity or power source. Instead, the vent features a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent.

As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.

Kit includes:

• Vent bracket
• Piston
• All necessary hardware for installation

Not for use with Ultimate Raised Bed Kit.