Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories 4 to 8 roof vents:

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

Exceptional Growing Environment

included with the 187 gallon unit

Make sure to order the correct size

Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories 4 to 8 roof vents: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, driving the piston that opens