moobody Automatic Vent Opener Greenhouse Windows Opener Auto Vent Opener Temperature Sensitive Single Spring Vent Opener

【Automatic Vent Opener】Greenhouse windows opener can open and shut your greenhouse window automatically to maintain best growing temperature and preventing your greenhouse from overheating. 【Wide Applicability】Single spring vent opener can be closed manually and easy to install, fit for most of aluminum frame greenhouse. 【Adjustable Temperature 】Temperature is adjustable from 15-25℃ (60-77℉) by turning cylinder, maximum opening at about 30℃/86℉ (depending on adjustment and load). 【Iron Construction】Durable and rust-proof Iron windows opener for last long time use. 【15lb Load Bearing】Use Standard Vent Opener to lift to 7kg / 15 lbs.