Gas Stay Roof - 4414159 Models Agrotron 4.70, Agrotron 4.80, Agrotron 4.85, Agrotron 4.90, Agrotron 4.95, Agrotron 6.00, Agrotron 6.01, Agrotron 6.05, Agrotron 6.15, Agrotron 6.20, Agrotron 6.30, Agrotron 6.45