Big deal Solar Heat Sensitive Auto Thermo For Window Open Greenhouse Vent Autovent Automatic Agricultural Windows Opening | Обустройство

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Color: silver + black
Type: Greenhouse Window Opener
Material: Aluminum Alloy
Fully automatic greenhouse ventilation
Heat activated
Fully adjustable to open between 15-25 C (60-77 F)
Open window fully to 350mm
Suitable for windows up to 7kg
Easy fitting by clamps or screws provided
No batteries or electricity required
Feature
Temperature controlled sensor cylinder enables roof vents to be opened and closed at the appropriate time, ensuring sufficient airflow
Universal fit - suitable for any aluminium frame and wood frame greenhouse
Simple and effective way to provide extra ventilation for your greenhouse
Easy to install
Bad weather can quickly closed the window
Detail
Both the frame and cylinder is made of Aluminum, longer using-life.
Even the surface was scratched, the window opener will not get rusty.
Package Contents:
1 * double spring window opener
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.