Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Make sure to order the

Make sure to order the correct size

Its ease of use is a standout feature: load your product

Oxygen Absorbers (50 ct)

included with the 187 gallon unit

Exceptional Growing Environment

Alton | Bayliss XL Roof Vent Opener Piston Replacement arrow shed all-size accessories Make sure to order theThe 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