---
product_id: 50345248
title: "Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener"
brand: "bayliss autovents"
price: "417 Lei"
currency: RON
in_stock: true
reviews_count: 10
category: "Bayliss Autovents"
url: https://www.desertcart.ro/products/50345248-bayliss-xl-autovent-automatic-greenhouse-window-opener-temperature-sensitive-solar
store_origin: RO
region: Romania
---

# Easy install with adjustable clamp system Solar-powered, no electricity needed Durable corrosion-resistant anodised aluminium Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener

**Brand:** bayliss autovents
**Price:** 417 Lei
**Availability:** ✅ In Stock

## Summary

> ☀️ Let your greenhouse breathe smarter, not harder!

## Quick Answers

- **What is this?** Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener by bayliss autovents
- **How much does it cost?** 417 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/50345248-bayliss-xl-autovent-automatic-greenhouse-window-opener-temperature-sensitive-solar)

## Best For

- bayliss autovents enthusiasts

## Why This Product

- Trusted bayliss autovents brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly British Made:** Hand-built in the UK with a 2-year guarantee—trusted by thousands of greenhouse pros.
- • **Robust Build Quality:** Crafted from anodised aluminium and recycled plastic for long-lasting corrosion resistance.
- • **Precision Engineering:** Lifts up to 6kg with a smooth 30cm opening range for optimal ventilation.
- • **Eco-Friendly Solar Power:** Runs 100% on sunlight, eliminating electricity costs and carbon footprint.
- • **Effortless Climate Control:** Automatically opens/closes windows based on temperature—no manual guesswork needed.

## Overview

The Bayliss XL Autovent is a solar-powered, temperature-sensitive automatic window opener designed for metal and wooden greenhouses. Made from durable anodised aluminium and recycled plastic, it offers a 30cm opening range with a lifting force over 6kg. Easy to install and built in the UK, it provides eco-friendly, hands-free ventilation with a 2-year guarantee.

## Description

Electricity-free solar-powered greenhouse vent automatically adjusts windows based on temperature. Durable corrosion-resistant materials, 2-year guarantee, made in the UK.

Review: If you need one, buy this one - Bought to replace a broken window system in an old metal greenhouse. It's been commented as 'easy to install' whilst this is true, it is not difficult, it IS fiddly. The instructions are very clear and very good, it can be fitted on a lip present in metal framed greenhouses or screwed into a wooden greenhouse frame. We have metal so I can only really comment on this. So, it uses a metal lip on the hinged window and a metal lip on the frame below this window. It basically makes a 'vice' between the metal lip and a metal plate you 'screw' onto the contraption. You are tasked with creating this vice on one side of the item and tightening it into place and then flexing it to get the vice on the other side. It basically needs you to put pressure on the spring and to hold and tighten the vice at the same time. It would absolutely be easier with four hands, so if you think you might struggle, borrow a friend for a few minutes. But the time needed to fit it, is very much so, about 4 to 5 minutes (not including half an hour in the fridge so get the gas chamber easy to fit- you don't want it expanding in the heat as you work on it - covered in the instructions). Easy to install, but a bit fiddly if you're by yourself. It arrived quickly, installed quickly and we noted the next day in the variable warmth of early May, it was working, both to open and close carefully. Very happy with the product, opens a lot wider than the one we had before (it was about 10 years old) and the tomatoes seem to like it. Be careful when you tighten the hinge to close it using the end screwing system at the final stage of the process, the metal was a bit sharp and again, quite fiddly to get fingers in, use a tool or wear gloves or it may scratch your knuckles/fingers as you turn it.
Review: Works well, easy to fit - Looked at a few options before settling on this one. Wanted an opener for my small palram lean to green house, the important attribute was the piton being incorporated into the scissor sections and not protruding as with other brands as this would foul on the limited room and clearance. I had it fitted with the easy clamping system in 10 minutes, it is pretty easy but also a bit fiddly. If you’re a handy diyer or played with mecano as a kid you’ll find it simple enough. I Chilled the piston as per instructions, fitted it and adjusted things and then watched in amazement as it slowly opened the window as and when the sun warmed things up a bit. I checked at end of day and it’s closed down again. Time will tell but so far pleased with it, might add some pictures in time. Hoping the plants will get optimal warming but not get cooked compared to me manually guessing a good setting for the window and door as I remember to do it. Chose this one for the neat and clever design, it’s a known make so should be good for spares in the future, plus it’s made in Britain, also a #1 best seller.

## Features

- Designed to fit most metal and wooden greenhouses
- Electricity free using solar power to automatically open and close your greenhouse windows
- Built from durable and corrosion resistant materials, annodised aluminium and recycled plastic bracketary
- Hand built here in the UK using quality components and guaranteed for 2 years
- Lifting force of over 6kg and has maximum opening range of 30cm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0027DJ5RM |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 10,831 in Garden ( See Top 100 in Garden ) 2 in Greenhouse Window Openers |
| Customer Reviews | 4.4 4.4 out of 5 stars (3,913) |
| Date First Available | 3 Aug. 2021 |
| Global Trade Identification Number | 05033490000019 |
| Included Components | BAYLISS GREENHOUSE AUTOVENT XL |
| Item Package Quantity | 1 |
| Item Weight | 410 g |
| Item model number | XL Autovent |
| Manufacturer | Bayliss Autovents |
| Material | wood |
| Maximum weight capacity | 6 Kilograms |
| Number of doors | 1 |
| Number of vents | 1 |
| Part Number | 099556 |
| Power Source | ac |
| Product Dimensions | 5.99 x 30 x 4.5 cm; 410 g |
| Size | 1 Count (Pack of 1) |
| Special Features | Adjustable temperature, winds up to 10 kg, easy to install |
| Special feature | Adjustable temperature, winds up to 10 kg, easy to install |
| UPC | 798256063701 764558054914 |

## Product Details

- **Brand:** Bayliss Autovents
- **Colour:** Silver
- **Cover material:** Plastic
- **Frame material:** Aluminium
- **Nominal wall thickness:** 3 millimeters

## Images

![Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener - Image 1](https://m.media-amazon.com/images/I/31abQvVFCLL.jpg)
![Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener - Image 2](https://m.media-amazon.com/images/I/410XiuGyo-L.jpg)
![Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener - Image 3](https://m.media-amazon.com/images/I/41HwixeoMpL.jpg)
![Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener - Image 4](https://m.media-amazon.com/images/I/41mrAbpsJRL.jpg)
![Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener - Image 5](https://m.media-amazon.com/images/I/41nCzEtKWaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ If you need one, buy this one
*by L***U on 19 May 2023*

Bought to replace a broken window system in an old metal greenhouse. It's been commented as 'easy to install' whilst this is true, it is not difficult, it IS fiddly. The instructions are very clear and very good, it can be fitted on a lip present in metal framed greenhouses or screwed into a wooden greenhouse frame. We have metal so I can only really comment on this. So, it uses a metal lip on the hinged window and a metal lip on the frame below this window. It basically makes a 'vice' between the metal lip and a metal plate you 'screw' onto the contraption. You are tasked with creating this vice on one side of the item and tightening it into place and then flexing it to get the vice on the other side. It basically needs you to put pressure on the spring and to hold and tighten the vice at the same time. It would absolutely be easier with four hands, so if you think you might struggle, borrow a friend for a few minutes. But the time needed to fit it, is very much so, about 4 to 5 minutes (not including half an hour in the fridge so get the gas chamber easy to fit- you don't want it expanding in the heat as you work on it - covered in the instructions). Easy to install, but a bit fiddly if you're by yourself. It arrived quickly, installed quickly and we noted the next day in the variable warmth of early May, it was working, both to open and close carefully. Very happy with the product, opens a lot wider than the one we had before (it was about 10 years old) and the tomatoes seem to like it. Be careful when you tighten the hinge to close it using the end screwing system at the final stage of the process, the metal was a bit sharp and again, quite fiddly to get fingers in, use a tool or wear gloves or it may scratch your knuckles/fingers as you turn it.

### ⭐⭐⭐⭐⭐ Works well, easy to fit
*by A***Z on 18 April 2024*

Looked at a few options before settling on this one. Wanted an opener for my small palram lean to green house, the important attribute was the piton being incorporated into the scissor sections and not protruding as with other brands as this would foul on the limited room and clearance. I had it fitted with the easy clamping system in 10 minutes, it is pretty easy but also a bit fiddly. If you’re a handy diyer or played with mecano as a kid you’ll find it simple enough. I Chilled the piston as per instructions, fitted it and adjusted things and then watched in amazement as it slowly opened the window as and when the sun warmed things up a bit. I checked at end of day and it’s closed down again. Time will tell but so far pleased with it, might add some pictures in time. Hoping the plants will get optimal warming but not get cooked compared to me manually guessing a good setting for the window and door as I remember to do it. Chose this one for the neat and clever design, it’s a known make so should be good for spares in the future, plus it’s made in Britain, also a #1 best seller.

### ⭐⭐⭐⭐ Trickier than expected to fit
*by A***R on 20 June 2024*

Have used these exact same openers in the past with older greenhouses and had absolutely no problems fitting them. With my new greenhouse however came close to cracking the glass as bolts protrude slightly too far, luckily realised in time before any damage done. As greenhouse has the appropriate holes for fixing an opener decided to fit it properly using bolts rather than the supplied clamp plates. Opener itself operates perfectly. In summary I'd recommend these so long as you're careful when fitting.

## Frequently Bought Together

- Bayliss XL Autovent - Automatic Greenhouse Window Opener - Temperature Sensitive Solar Vent Opener
- 15-Pack Greenhouse Bolts and Rings, Aluminium Cropped Head Greenhouse Bolts and Nuts, Creating Suspension Anchors Point In Glazed Steel Channels to Plant Clips for Climbing Plants, Building Greenhouse

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-14*