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

Description:
Ingenious temperature-sensitive automatic vent opener can automatically open and close window frame, really works well in maintain the greenhouse within the preferred temperature range. Vent opener starts opening between 15-25℃ (60-77℉), depending on how you have adjusted the cylinder.
 
Features:
[Automatic Vent Opener]Greenhouse windows opener can open and shut your greenhouse window automatically to maintain the 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 Range]Temperature range is adjustable from 15-25℃ (60-77℉) by turning the cylinder, maximum opening at about 30℃/86℉ (depending on adjustment and load).
[Iron Construction]Durable and rust-proof Iron windows opener with paint spraying for last long time use.
[15lb Load Bearing]Use the Standard Vent Opener to lift up to 7kg / 15 lbs.

Specifications:
Material: Aluminum, Stainless Steel
Color: Silver
Star open at:：15-25℃ (60-77℉)                                             
Fully open at: 30℃/86℉                              
Load bearing: 7KG / 15lb
Cylinder Length: 33.5cm / 13.18inch
Package Size: 37.6*10*4.8cm / 14.8*3.93*1.88inch
Package Weight: 344g / 0.75lb

Package List:
1 * Automatic Vent Opener
1 * Cylinder
1 * Package of Accessory
1 * Manual (English)

Note:
Do not heat to more than 50℃(122℉).
The window must always be able to open, it must not be obstructed