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Window Opener Vent Opener Auto Vent Opener with Double Spring Greenhouse Windows Opener Temperature Controlled Automatic Vent Opener

Window Opener Vent Opener Auto Vent Opener with Double Spring Greenhouse Windows Opener Temperature Controlled Automatic Vent Opener

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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.

Features:
Compared with the single spring vent, the double one has stronger thrust force, more solid, and much durable.
The double spring vent opener can be closed manually.
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 15-25℃(60-77℉) by turning the cylinder. (Clockwise for higher, counter-clockwise for lower)
Maximum opening at about 30℃/86℉(depending on adjustment and load).
Suitable for the vents weighting up to 7kg/15lb.

Specifications:
Material: Aluminum+SS
Item Weight: Approx. 376g / 13.26oz
Package Weight: Approx. 439g / 15.49oz
Package Size: Approx. 38 * 9.5 * 4.5cm / 14.96 * 3.74 * 1.77in

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

Note:
Do not heat to more than 50℃(122℉).
Do not dismantle the cylinder.
Cooling the cylinder for 24 hours before installation.

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