Louver Opener,Automatic Opening Closing Louver Blind Window Opener Opening Tool for Home Office Automatic Window Opener for Greenhouse-Fast Shipping

Description

Made of high quality aluminium material, not easy to rust and durable in use.

Spring and support bar provide additional protection against wind damage.

The window opener automatically opens and closes as the temperature changes.

Universal, easy to install and use, suitable for any blind window, easy to use.

Easy fitting by clamps or screws provided, no batteries or electricity required.