Alton Bayliss XL Piston Shelves Operation: Automatic temperature-activated opening and

Operation: Automatic temperature-activated opening and closing

Optional roof crests and finials for a more traditional look

and pushing out stale warm air above

Ideal for minimizing sunlight hours and decreasing sun intensity in hot climates

The Sunda Wicker Look Rain Barrel is made from the highest grade of high-density polyethylene plastics

Alton Bayliss XL Piston Shelves Operation: Automatic temperature-activated opening andAlton Bayliss XL Piston The Bayliss XL Piston or Power Tube is a direct replacement component designed specifically for the Bayliss XL Automatic Greenhouse Vent Opener. If your current unit is no longer responding as it should, replacing the power tube is a simple and cost effective way to restore smooth, temperature driven vent operation. This tube contains a heat sensitive wax core that expands as temperatures rise and contracts as they fall,