ENERGY EFFICICENT: Brand new Greenhouse Automatic Window Opener. Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops, environmental friendly.
APPLICATION: Ideal for your greenhouse window opens and closes your greenhouse window as the temperature.
UNIVERSAL: Automatic air vent opener is appropriated for most of the current garden greenhouses.
AUTOMATIC VENT OPENER: Solar heat sensitive vent opener, automatic stretch or shrink the vent while the temperature is changing.about 30cm x 1.5cm x 3cm/11.81*0.59*1.18inch
EASY TO INSTALL:universal fit for all aluminum frame greenhouse.suitable for the vents weighting up to 7kg/15lb.
