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

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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