🌍 Worldwide shipping · 30-day returns · Rated Excellent on Trustpilot ★★★★½
Price
$29.30
Demeras Greenhouse Window Vent Opener, Telescopic Rod, Frame Mount, Metal, Powder Coated, Modern, Green — image 1
Window OpenersDemeras✓ In stock

Demeras Greenhouse Window Vent Opener, Telescopic Rod, Frame Mount, Metal, Powder Coated, Modern, Green

$29.30
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Product description

Features: 【TEMPERATURE CONTROL】 This automatic greenhouse vent opener will automatically open and close your greenhouse window to control the temperature inside, so it can prevent greenhouse overheating. 【IDEAL FOR YOUR GREENHOUSE WINDOW】The window opener is non electric, it uses solar energy to open or close the greenhouse vents as temperature rises or drops.Energy saving and environmental protection 【AUTOMATIC CHANGE】 As the temperature changes automatically, maintains the best growing temperature .With the automatic window openers, you can be sure of an even temperature in your greenhouse day and night. So you don't have to stare at your greenhouse temperature at any time. 【DURABLE QUALITY】 This opener uses solar energy, open or close the greenhouse vents as temperature rises or drops.The window opener is made of high materials. It is very durable safe and easy to install. Specifications: Greenhouse Window Opener Kit Material: Aluminum Alloy Fully adjustable between 20 - 25 ° C (68 - 77 ° F) Maximum window opening: 45cm / 18 inch Maximum opening weight: 7kg/15lb Size: 38 x 9.5 x 9.5 cm / 14.96 x 3.74 x 3.74 inch (a ppr.) Package: 1 x Automatic Window Opener Kit  Notes: Do not use this opener anywhere the temperature will exceed 50° (122F) Please ensure your greenhouse window can be opened freely by at least 45cm (18") Do not apply excessive loads by locking or covering window Do not dismantle the cylinder The opener CANNOT stop by manual Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

Product details
Brand
Demeras

Customer reviews

What customers say about Bigamart

10 Trustpilot reviews total, with 2 shown at a time.

Trustpilot
Excellent
4.5 average rating
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S
Sigalit
🇮🇱 · January 2026

I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.

V
Verified buyer
🇦🇺 · November 2025

The package was here in Australia from England in a few days — so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.

Showing 12 of 10 reviews

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