KOXXUD Greenhouse Vent Window Opener, Upgrade Greenhouse Vent Automatic Opener with The Load of 15 kgs / 33 lbs to Automatically Open and Close The Greenhouse Window and Roof

KOXXUD Double Spring Greenhouse Window Opener improves the low bearing capacity of the single-spring window opener and optimizes the problem of rust-prone black iron spray paint window opener, which adapts high-quality aluminum alloy material, the thrust is larger and more durable.
【VERY ECO-FRIENDLY】Double spring greenhouse window opener does not require batteries or electricity, as the indoor temperature and air pressure rise or fall, it automatically opens or closes the greenhouse’s vents, which maintains the optimal temperature for plant growth.
【EASY INSTALLATION】Easy installation and storage of double spring greenhouse window opener via the video linked of our products or installation manual.
【DOUBLE SPRING DESIGN】According to previous customer feedback, we upgraded the old single spring to double spring, and the maximum bearing force has been increased from 7kgs/15lbs to 15kgs/33lbs, so that the window opener can not only be used in lightweight aluminum alloy windows, but also used on wooden windows.
【NOTE】Minimum opening temperature: 15-25℃; Fully open temperature: 30℃/86℉; Maximum opening distance: 45cm / 18”; Maximum load: 7-15kgs/15-33lbs; If there is any problem, please contact us, we are always at your service.