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Helps to eliminate humidity build up from wet ground
Metal Reinforced Roof Support Truss System Holds Up Over 20 lbs/sqft of Snow
State of the art design will enhance the appearance of any outdoor scene
The VI 34 is perfect for use as a full featured greenhouse
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