Vitavia window opens to greenhouse univent window opens model univent. Powerful window opens, there is equipment with two springs. What means, to univent closes window quickly, fool temperature falls. Univent is extremely suitable to greenhouses with polycarbonate. Polycarbonate weighs not right much past, the laws plates weight contribute therefore almost not to to close window. Therefore to what one good idea to apply univent, there draws window stronger down than andré vinduesoplukkere. Can easy click...
