Window Opener Single Spring Greenhouse Temperature Control Auto Vent Opener

After installed this temperature controlled automatic vent opener, your window will be a self opening one. It is solar heat sensitive that open the vent when weather warms up and then closing when it cools down. Really works well in maintain the greenhouse within the preferred temperature range.

• Elongated aluminum cylinder with paint spraying, weather resistant

• Solar heat sensitive vent opener, automatic stretch or shrink the vent while the temperature is changing

• Stainless steel accessories would last long time use

• Aluminum frame looks more lustrous, durable and rust-proof

• Easy to install, universal fit for all aluminum frame greenhouse

• Auto-opening temperature range is adjustable from 15 Celsius degree – 25 Celsius degree(60-77℉)

• Maximum opening at about 30 Celsius degree/86℉(depending on adjustment and load)、Suitable for the vents weighting up to 7kg/15lb

Specifications:

• Material: Aluminum+SS

• Item Weight: Approx. 305g / 10.78oz