--- product_id: 14097535 title: "Greenhouse Univent Window Opener" brand: "orbesen" price: "£62.83" currency: GBP in_stock: true reviews_count: 8 category: "Orbesen" url: https://www.desertcart.co.uk/products/14097535-greenhouse-univent-window-opener store_origin: GB region: United Kingdom --- # Lifts up to 15 lbs Easy install Temp range: 65-77°F Greenhouse Univent Window Opener **Brand:** orbesen **Price:** £62.83 **Availability:** ✅ In Stock ## Summary > 🌿 Open Up to Nature's Best! ## Quick Answers - **What is this?** Greenhouse Univent Window Opener by orbesen - **How much does it cost?** £62.83 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/14097535-greenhouse-univent-window-opener) ## Best For - orbesen enthusiasts ## Why This Product - Trusted orbesen brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **🔄 Versatile Design:** Perfect for cold frames, doors, vents, and windows. - • **🔒 Reliable Performance:** Unique hydraulic cylinder with a 3-year replacement guarantee. - • **🌱 Eco-Friendly Gardening:** Enhance your greenhouse environment effortlessly. - • **🌞 Smart Temperature Control:** Automatically opens based on heat and sunlight. - • **🛠️ Hassle-Free Installation:** Screws directly into various materials for quick setup. ## Overview The Greenhouse Univent Window Opener is a temperature-activated vent opener that effortlessly lifts up to 15 lbs, ensuring optimal airflow in your greenhouse. It starts opening between 65 to 77 degrees Fahrenheit, is easy to install on various materials, and features a unique hydraulic cylinder backed by a 3-year manufacturer replacement guarantee. ## Description UNIVENT Automatic Window Opener uses our powerful temperature sensitive hydraulic cylinder that has been in use for decades as the standard in reliability to open cold frames, windows, vents, doors, tunnels, hot houses and demi-lumes. The key features that differentiate UNIVENT is it's compact design, EASY-CLIP-SYSTEM, Double Spring Design, and now our Security Tape for closing the hinge up for winter. The innovative EASY-CLIP-SYSTEM makes it easy to rapidly disconnect one end of the opener without any cumbersome tools, simply undo the clip and have access to the inside of your opening, even in the closed position. The standard cylinder carries a Manufacturer coverage for replacement for 3 years, and replacement cylinders are also easily available to purchase. Material: Aluminum Maximum opening width: 17.5 inches Maximum opening temperature at 86 degrees F Maximum lift: 15 pounds Made in Denmark under the strictest quality standards in the industry. This is a professional and serious home and garden vent opener made by the same company in Denmark since 1978 by Johannes Orbesen and his world famous "Open Sesame" invention. ## Features - Temperature Activated (Heat, Sun, Solar) Vent Opener can lift up to 15 lbs - Starts opening between 65 to 77 degrees F, depending on how you have adjusted the cylinder - Easy to install, Screws directly into polycarbonate panels, wood, or metal frames - Unique hydraulic cylinder has 3 year manufacturer replacement guarantee - Versatile hinge opens cold frames, doors, vents and windows ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0083IZG0A | | Best Sellers Rank | #197,775 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #21 in Greenhouse Window Openers | | Brand | Orbesen | | Brand Name | Orbesen | | Closure Type | Tape | | Color | black | | Cover Material | Polycarbonate (PC) | | Customer Reviews | 4.5 out of 5 stars 772 Reviews | | Frame Material | Aluminum | | Global Trade Identification Number | 05701972183313 | | Indoor Outdoor Usage | Outdoor | | Item Weight | 14.08 ounces | | Manufacturer | J. Orbesen Teknik Aps | | Manufacturer Part Number | 441665 | | Model Number | 441665 | | Number Of Vents | 2 | | Number of Doors | 1 | | Special Features | Removable | | Weight Capacity | Maximum weight: 15 Pounds | ## Product Details - **Color:** black - **Brand:** Orbesen - **Item Weight:** 14.08 ounces - **Cover Material:** Polycarbonate (PC) - **Frame Material:** Aluminum ## Images ![Greenhouse Univent Window Opener - Image 1](https://m.media-amazon.com/images/I/71B9Mk3laWL.jpg) ![Greenhouse Univent Window Opener - Image 2](https://m.media-amazon.com/images/I/51OQGtBEjdL.jpg) ![Greenhouse Univent Window Opener - Image 3](https://m.media-amazon.com/images/I/41TxHGeXu5L.jpg) ![Greenhouse Univent Window Opener - Image 4](https://m.media-amazon.com/images/I/81Gbl3F0+CL.jpg) ![Greenhouse Univent Window Opener - Image 5](https://m.media-amazon.com/images/I/91QR-sZ9CUL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by B***E on April 15, 2026* ### ⭐⭐⭐⭐⭐ Review *by J***H on January 3, 2026* ### ⭐⭐⭐⭐⭐ Review *by C***I on February 4, 2026* ## Frequently Bought Together - Greenhouse Univent Window Opener - 1" S-Shaped Silver Wire Hook Connectors Chain Hardware for Hanging Products or Items, Fishing Lure, Net Equipment, Key Ring Assembly (95 Pack) - Gridwall Joining Clips Connectors for Grid Panels - Black Color - Box of 25 Pcs. --- ## 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.co.uk/products/14097535-greenhouse-univent-window-opener](https://www.desertcart.co.uk/products/14097535-greenhouse-univent-window-opener) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-07*