These do not come with automatic openers

One roof vent for ventilation on smaller sizes

Rear Window Opening: 3'5" x 2'1"

Livingten 6: 11' 5 3/4" W x 19

Riverstone | MONT Moheat Solar Greenhouse Kit Package With 8mm Twin-wall Polycarbonate Glazing VI46 These do not come withThe MONT Moheat Greenhouse is the ultimate greenhouse for warm weather gardening, offering premium features and innovative design to optimize your growing experience. Proudly made in the USA, this greenhouse is crafted with precision and durability, ensuring reliable performance year round. Key Features: Efficient Ventilation and Climate Control Includes a solar powered commercial grade ventilation system that produces more than twice the power needed