Sign up for 2-Pack Automatic Roof Vent Opener For Greenhouses – Metal Silver, No Battery Required, Ventilation Assistant
2-Pack Automatic Roof Vent Opener For Greenhouses – Metal Silver, No Battery Required, Ventilation Assistant
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$ 34.50
Description
Tired of running out to your greenhouse every time the sun comes out to crack a window?
These automatic roof vent openers are here to save you.
You get two openers in this pack – they're silver, made of metal, and they work completely without electricity or batteries.
They use a thermal expansion mechanism – when it gets warm, they push the window open; when it cools down, they close it back up.
Super clever and super reliable.
They're unbranded, but the build quality feels solid.
Installation is pretty easy – just mount the bracket to your frame and attach the arm to the window.
Once they're set up, you can literally forget about them – they'll do the job day in and day out.
Great for keeping your plants from cooking on a hot afternoon or freezing at night.
These automatic roof vent openers are here to save you.
You get two openers in this pack – they're silver, made of metal, and they work completely without electricity or batteries.
.jpg "The Leading Window Openers & Ventiliation Specialists | Rocburn")
They use a thermal expansion mechanism – when it gets warm, they push the window open; when it cools down, they close it back up.
Super clever and super reliable.
They're unbranded, but the build quality feels solid.
Installation is pretty easy – just mount the bracket to your frame and attach the arm to the window.
Once they're set up, you can literally forget about them – they'll do the job day in and day out.
Great for keeping your plants from cooking on a hot afternoon or freezing at night.
.jpg?x-oss-process=image/resize,m_fill,w_600,h_600 "465493_6")
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