Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Metal Reinforced Roof Support Truss

Metal Reinforced Roof Support Truss System Holds Up Over 20 lbs/sqft of Snow

Exceptional Growing Environment

included with the 187 gallon unit

Helps to eliminate humidity build up from wet ground

State of the art design will enhance the appearance of any outdoor scene

Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Metal Reinforced Roof Support TrussThe 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, driving the piston that opens