Anself Automatic Vent Opener Greenhouse Windows Opener Auto Vent Opener Temperature Sensitive Paint Spraying Iron Double Spring Vent Opener

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