Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Helps to eliminate humidity build

Helps to eliminate humidity build up from wet ground

included with the 187 gallon unit

Exceptional Growing Environment

Oxygen Absorbers (50 ct)

4 to 8 roof vents: Multiple roof vents for effective airflow

Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Helps to eliminate humidity buildThe 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