--- product_id: 74944292 title: "Ellovent™ Special Autovent, Heavy Duty Greenhouse Vent Opener" brand: "elloughton greenhouses" price: "¥10254" currency: JPY in_stock: true reviews_count: 9 category: "Elloughton Greenhouses" url: https://www.desertcart.jp/products/74944292-ellovent-special-autovent-heavy-duty-greenhouse-vent-opener store_origin: JP region: Japan --- # Adjustable opening Double spring mechanism Proudly made in Europe Ellovent™ Special Autovent, Heavy Duty Greenhouse Vent Opener **Brand:** elloughton greenhouses **Price:** ¥10254 **Availability:** ✅ In Stock ## Summary > 🌿 Elevate Your Greenhouse Game! ## Quick Answers - **What is this?** Ellovent™ Special Autovent, Heavy Duty Greenhouse Vent Opener by elloughton greenhouses - **How much does it cost?** ¥10254 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/74944292-ellovent-special-autovent-heavy-duty-greenhouse-vent-opener) ## Best For - elloughton greenhouses enthusiasts ## Why This Product - Trusted elloughton greenhouses brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Wind Resistant:** Double spring mechanism ensures stability against gusts. - • **Plant-Friendly Design:** Adjustable opening tailored for diverse plant needs. - • **Quality You Can Trust:** Crafted in Europe, ensuring premium quality and durability. - • **Effortless Ventilation:** Experience seamless airflow with our easy-to-fit design. - • **Versatile Compatibility:** Perfect for roof vents and top hung side vents. ## Overview The Ellovent™ Special Autovent is a heavy-duty greenhouse vent opener designed for easy installation and optimal plant care. With a robust double spring mechanism, it withstands wind gusts while providing adjustable openings suitable for various plants. Proudly made in Europe, this product guarantees quality and reliability, making it a must-have for any serious gardener. ## Description Product description The Ellovent Special Heavy Duty Automatic Greenhouse Vent Opener Opens and Closes Greenhouse Windows Automatically Double Springs and Double Arms give extra protection against wind damage These high quality automatic openers are proudly made in Denmark and are fully guaranteed for two years. Please do not confuse this item with any of the cheap far east copies which are not made to the same standards. Fits directly to roof vents and slam bars of standard Aluminium Greenhouses without the need to drill anything. High quality clamps fasten directly over your bars and tighten in place, these units can be fitted in minutes. Technical Data: Maximum window opening approx 45cm (17 3/4") Maximum opening at 30˚C (86˚F) Opening start temperature easily adjustable between 17˚C - 25˚C (60˚F - 77˚F) Can lift up to 7kg which equals a window weighing 15kg (33lbs) Manufactured in Aluminium and Zinc coated steel for long trouble free life. Attractive silver finish blends well with traditional aluminium greenhouses. We also stock many other quality Autovents from other manufacturers and side louvre vent openers as well as spare cylinders for all our autovents. Please look at our other items in our shop We are a specialist greenhouse supply and build company based in Yorkshire that sells nothing else but quality greenhouses and accessories. We do not sell hundreds of lines that we know little about, we have tried and tested everything we sell and are completely confident in our products and service Many thanks for looking. Safety Warning Always disengage the autovent in severe winds to prevent damage. Ensure the window weight does not exceed 15kg for safe operation. Review: Works great once you figure out how to assemble it. - Previous reviews suggest drilling is not required, however, on my polycarbonate greenhouse I needed to drill holes on the upper window frame to get the brackets to line up in the correct way so that the window opened. My initial installation using just the brackets didn't work - the hinge was either stuck shut or stuck open depending on how I attached it. Watching the YouTube video is a must before you start as it's really useful and ultimately led me to realising why it wasn't working and that I needed to drill two holes to attach the bracket in the correct place. Now it is fitted correctly it feels very sturdy and works really well. Happy with my purchase and it looks like it will last a long time. Review: Stronger than it looks - Fitted this to an Eden aluminium greenhouse. The only problem was the depth of the frame that the roof window closes onto - 4.5cm (where the old window stays used to fit). As the bottom bracket has to be fitted under this frame it means that the window bracket and sill bracket of the opener are 5cm apart before they start moving. If you watch the manufacturer's video, the upper and lower arms are parallel when the window is closed. It should open to 45cm but the best I've achieved so far is 30cm at 35C, which may be because of the design of my window. Other models of greenhouse may not have this issue. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FBM5X1J | | Best Sellers Rank | 144,167 in Garden ( See Top 100 in Garden ) 48 in Greenhouse Window Openers | | Customer Reviews | 4.2 4.2 out of 5 stars (116) | | Date First Available | 7 July 2018 | | Manufacturer | Elloughton Greenhouses | | Material type | Alloy Steel, Aluminium | | Package Dimensions | 38.1 x 9.6 x 5.2 cm; 400 g | ## Product Details - **Brand:** Elloughton Greenhouses - **Colour:** Silver - **Item weight:** 400 Grams - **Material:** Alloy Steel, Aluminium - **Style:** Automatic,Adjustable,Greenhouse ## Images ![Ellovent™ Special Autovent, Heavy Duty Greenhouse Vent Opener - Image 1](https://m.media-amazon.com/images/I/81TVXO2-01L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works great once you figure out how to assemble it. *by H***S on 19 April 2021* Previous reviews suggest drilling is not required, however, on my polycarbonate greenhouse I needed to drill holes on the upper window frame to get the brackets to line up in the correct way so that the window opened. My initial installation using just the brackets didn't work - the hinge was either stuck shut or stuck open depending on how I attached it. Watching the YouTube video is a must before you start as it's really useful and ultimately led me to realising why it wasn't working and that I needed to drill two holes to attach the bracket in the correct place. Now it is fitted correctly it feels very sturdy and works really well. Happy with my purchase and it looks like it will last a long time. ### ⭐⭐⭐⭐⭐ Stronger than it looks *by J***H on 16 May 2020* Fitted this to an Eden aluminium greenhouse. The only problem was the depth of the frame that the roof window closes onto - 4.5cm (where the old window stays used to fit). As the bottom bracket has to be fitted under this frame it means that the window bracket and sill bracket of the opener are 5cm apart before they start moving. If you watch the manufacturer's video, the upper and lower arms are parallel when the window is closed. It should open to 45cm but the best I've achieved so far is 30cm at 35C, which may be because of the design of my window. Other models of greenhouse may not have this issue. ### ⭐⭐⭐⭐ Good, sturdy Autovent *by F***S on 4 April 2022* This is a sturdy, powerful, autovent. It works well. I've knocked a star off because the instructions could be better! They refer to a hole on the autovent that is not even on the product, and generally are not very helpful. Perhaps it's the translation from the original Danish? I don't know. The product is really good, once you've figured out how it is best to fit it. I recommend the product, but not the instructions in English. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/74944292-ellovent-special-autovent-heavy-duty-greenhouse-vent-opener](https://www.desertcart.jp/products/74944292-ellovent-special-autovent-heavy-duty-greenhouse-vent-opener) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-11-14*