Alton | Bayliss XL Roof Vent Opener Piston Replacement GARDEN CHAIR does not yellow or turn

does not yellow or turn brittle

crystal-clear glass walls

with clear detailed step-by-step instructions and well-labelled parts

Rust resistant aluminum frame powdered coated white

extend your growing season

Alton | Bayliss XL Roof Vent Opener Piston Replacement GARDEN CHAIR does not yellow or turnThe 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