Ventilation window for a greenhouse and method for mounting its plastic filmtaut across the window frame

摘要

The invention relates to a ventilation window structure characterised by thefact that close to the ridge formed by two ribs (1) of the greenhouse, alongboth sides of the transfer ridge pipe (2) on hinged mounted ventilationwindows (4 and 5), there is a guide plate (9) always fixed in relation to arib (10). This guide plate shows a split (10) in which a journal (11)belonging to a ventilation window is adjustably supported on bearings.IMAGE