--- product_id: 14097633 title: "Palram Rion Automatic Louver Opener" brand: "palram" price: "£88.13" currency: GBP in_stock: true reviews_count: 9 category: "Palram" url: https://www.desertcart.co.uk/products/14097633-palram-rion-automatic-louver-opener store_origin: GB region: United Kingdom --- # Automatic piston-driven vent control Heat-activated, no electricity Easy installation, compact design Palram Rion Automatic Louver Opener **Brand:** palram **Price:** £88.13 **Availability:** ✅ In Stock ## Summary > 🌿 Keep your greenhouse cool, smart, and effortlessly green! ## Quick Answers - **What is this?** Palram Rion Automatic Louver Opener by palram - **How much does it cost?** £88.13 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/14097633-palram-rion-automatic-louver-opener) ## Best For - palram enthusiasts ## Why This Product - Trusted palram brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Energy-Free Operation:** Harnesses natural mineral expansion—no electricity needed—making it eco-friendly and cost-effective. - • **Sleek & Compact Design:** At just 11" x 2" x 2", it fits seamlessly into your greenhouse setup without bulky hardware. - • **DIY-Friendly Installation:** Designed for quick setup so you can upgrade your greenhouse environment in no time. - • **Effortless Climate Control:** Automatically adjusts ventilation as temperatures rise, keeping your greenhouse perfectly balanced without lifting a finger. - • **Plant Protection Guaranteed:** Prevents heat stress by opening vents precisely when your plants need fresh air the most. ## Overview The Palram Rion Automatic Louver Opener is a compact, heat-activated ventilation system designed to automatically regulate greenhouse temperature. Using natural mineral expansion to power a piston mechanism, it opens vents as temperatures rise and closes them as they cool—without any electricity. Easy to install and built with durable aluminum, it ensures optimal airflow to protect plants from heat stress, making it an eco-friendly, low-maintenance climate control solution for serious gardeners. ## Description Product Description The Automatic Louver Vent Opener was designed to automatically control the temperature and provide additional ventilation in all Rion Greenhouses. As the air inside the greenhouse warms, the vent gradually opens to allow the correct amount of air flow into the greenhouse and closes when the optimal temperature is reached. The vent arm was designed with the use of natural minerals that expand with heat to push a piston, which raises the window, as the air gets warmer then contracts as it cools, closing with the use of a spring. The Automatic Vent Opener operates without the use of electricity. Manufacturer Contact Information 877-627-8476 ## Features - Assembled dimension: 11" w x 2" d x 2" h - Automatically control ventilation - Protect your plants from heat exposure - Easy to install - Heat activated, no electricity necessary ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00M5J33QM | | Best Sellers Rank | #375,450 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #42 in Greenhouse Window Openers | | Blade Material | Metal | | Blade Material Type | Metal | | Brand | Palram | | Brand Name | Palram | | Color | Silver | | Customer Reviews | 4.3 out of 5 stars 42 Reviews | | Global Trade Identification Number | 00763552402462 | | Item Dimensions W x H | 2"W x 11"H | | Item Weight | 1.3 Pounds | | Manufacturer | Rion | | Manufacturer Contact Information | 877-627-8476 | | Manufacturer Part Number | HG1033 | | Material | Aluminum | | Material Type | Aluminum | | Model Number | HG1033 | | Number of Items | 1 | | Operation Mode | Automatic | | Product Dimensions | 2"W x 11"H | | Size | 15.7"Lx2.7"Wx2"H | | UPC | 856668002913 763552402462 | | Unit Count | 1.0 Count | ## Product Details - **Blade Material:** Metal - **Brand:** Palram - **Color:** Silver - **Material:** Aluminum - **Size:** 15.7"Lx2.7"Wx2"H ## Images ![Palram Rion Automatic Louver Opener - Image 1](https://m.media-amazon.com/images/I/41YMN1E0OSL.jpg) ![Palram Rion Automatic Louver Opener - Image 2](https://m.media-amazon.com/images/I/81pI2--esWL.jpg) ![Palram Rion Automatic Louver Opener - Image 3](https://m.media-amazon.com/images/I/51QmFBJ4mlL.jpg) ![Palram Rion Automatic Louver Opener - Image 4](https://m.media-amazon.com/images/I/81Z0HmvmYxL.jpg) ![Palram Rion Automatic Louver Opener - Image 5](https://m.media-amazon.com/images/I/81aLgmLJkeS.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by J***A on January 14, 2017* ### ⭐⭐⭐⭐ Review *by J***B on May 6, 2023* ### ⭐⭐⭐⭐⭐ Review *by M***H on January 7, 2016* ## Frequently Bought Together - Rion Automatic Louver Opener, Silver, 15.7" Lx2.7 Wx2 H - Palram - Canopia Plant Hangers for Canopia Greenhouses - Palram - Canopia Shade Cloth for Canopia Greenhouses --- ## 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/14097633-palram-rion-automatic-louver-opener](https://www.desertcart.co.uk/products/14097633-palram-rion-automatic-louver-opener) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-16*