FIELD: ventilation.
SUBSTANCE: device comprises elongated housing with front and back walls that are positioned at a distance one from the other and provided with at least one opening and the gate valve for selective closing of the openings in the front wall to control air inflow to the greenhouse and air outflow from the greenhouse. The elongated housing has sealing strip for mounting between the cave beam and vitrified panel. The gate valve is made of the member of a valving structure for slot ventilation and is mounted over at least one opening in the front wall.
EFFECT: improved ventilation of greenhouse.
24 cl, 14 dwg
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