---
product_id: 1202939
title: "Canopia Automatic Roof Vent Opener for Greenhouses"
brand: "palram"
price: "A$117"
currency: AUD
in_stock: true
reviews_count: 10
category: "Palram"
url: https://www.desertcart.com.au/products/1202939-canopia-automatic-roof-vent-opener-for-greenhouses
store_origin: AU
region: Australia
---

# Quick, tool-free installation Oil-filled cylinder, no power needed Auto-opens at ~70°F Canopia Automatic Roof Vent Opener for Greenhouses

**Brand:** palram
**Price:** A$117
**Availability:** ✅ In Stock

## Summary

> 🌿 Let your greenhouse breathe—automatically, effortlessly, brilliantly.

## Quick Answers

- **What is this?** Canopia Automatic Roof Vent Opener for Greenhouses by palram
- **How much does it cost?** A$117 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/1202939-canopia-automatic-roof-vent-opener-for-greenhouses)

## 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:** No electricity or batteries—just smart, oil-filled thermal expansion technology doing the work.
- • **Hands-Free Climate Control:** Automatically vents your greenhouse as temperatures rise, so you never have to babysit your plants.
- • **Universal Fit & Easy Setup:** Fits multiple Canopia models and custom greenhouses with straightforward installation in minutes.
- • **Durable & Space-Smart Design:** Vertical piston placement keeps your workspace clear and maximizes greenhouse accessibility.
- • **Precision Temperature Adjustment:** Fine-tune vent opening temperature with a simple twist to match your seedlings’ ideal climate.

## Overview

The Palram Canopia Automatic Roof Vent Opener is a smart, oil-filled cylinder device that automatically opens greenhouse vents around 70°F to regulate temperature without electricity. Designed for easy installation on Canopia and other greenhouses, it replaces manual vent arms and allows simple temperature adjustment, ensuring optimal plant growth with minimal effort.

## Description

Product Description The Auto Vent Kit conveniently opens the window vent in your Snap & Grow, Mythos, Essence or Grow & Store Hobby Greenhouse. It is easy to install and no electricity is required. There is a liquid in the cylinder that expands as the temperature nears 70 degrees causing the vent to open. As the temperature drops the vent will close. Let the Auto Vent do the work for you. Manufacturer Contact Information 877-627-8476

Review: Roof Vent Opener - i built custom a lean to greenhouse and needed to attach opener to low side of roof. Works great. although i would like to be able to control interior temp (opens at 64F) to warmer temps for my seedlings, this works well for my needs. piston runs vertical rather than horizontal (as with most), so piston doesn't stick downward and get in way when i need access the plants on the shelves. I adjusted the knob for extension to as far out as i could to limit the opening. this design doesn't have to go on mfg greenhouse, can be used for other types. Easy to install. Instructions give size 1 font and 1000 languages. Instructions are not good but if you have common sense, you can figure it out. Def use the "put it in the fridge instruction". The cold causes the wax inside to contract, making it easier to position. comes with lots of configuration hardware for attachment. i just screwed directly into my frame. customer service is quick to reply if you have questions. but they said it only works on the mfg greenhouse. not true
Review: Pleasantly Surprised - After reading many reviews on this product on desertcart and other seller websites it was hard to tell if it was a good product or not. I decided to take a chance and after having it in place for about a month now, I am quite pleased. I live in the Washington, DC area where spring has been all over the place, from mid to high 80s to last night's record cold. This temperature fluctuation gave me the perfect opportunity to test and fine tune this device. First, I have a Poly Tex Snap and Grow (6'x8'). Poly Tex is essentially the same a Palram. When I received the kit, the instructions called for placing it in the refrigerator for 30 minutes to enable the retraction of the tube. I actually cheated and put it in the freezer for 10 minutes (just make sure it is cold and you are not forcing it). Installing it was very easy; just unhitched the manual opener and put the auto opener right back in the same place. The afternoon I installed it was quite warm. I had gone back in the house and when I came out about 15 minutes later, the vent was fully open. Over the course of the next week, I made small adjustments to the opening temperature until I got it right where I wanted it. The adjustments are made quite simply by turning the round piece at the end of the tube. Turning the piece clockwise means your greenhouse will be warmer before it starts to open. Turn it counter-clockwise if you want the vent to open at cooler temperatures. It is a big inconvenience to have to watch the greenhouse every day and run out to manually open the vent. This auto vent kit has been working perfectly so far. Now that the hot humid DC summer is fast approaching, I update this review if it fails to perform.

## Features

- Opens automatically when temperature rises to vent your Canopia Greenhouse
- Installs quickly and easily
- Simple, oil-filled cylinder, no power needed
- Replaces manual vent arm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002IOJJF8 |
| Best Sellers Rank | #77,064 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #5 in Greenhouse Window Openers |
| Blade Material | Metal |
| Brand | Palram |
| Color | Gray |
| Customer Reviews | 4.3 4.3 out of 5 stars (803) |
| Date First Available | July 22, 2009 |
| Department | 586 |
| Global Trade Identification Number | 00763552700438 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 15.8 ounces |
| Item model number | HG1005 |
| Manufacturer | Palram |
| Material | Aluminum |
| Number of Items | 1 |
| Operation Mode | Automatic |
| Product Dimensions | 1"W x 3"H |
| Size | One Size |
| UPC | 100012734594 728131178428 763552700438 |

## Product Details

- **Blade Material:** Metal
- **Brand:** Palram
- **Color:** Gray
- **Material:** Aluminum
- **Size:** One Size

## Images

![Canopia Automatic Roof Vent Opener for Greenhouses - Image 1](https://m.media-amazon.com/images/I/51qH3mb0EoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Roof Vent Opener
*by K***H on April 10, 2024*

i built custom a lean to greenhouse and needed to attach opener to low side of roof. Works great. although i would like to be able to control interior temp (opens at 64F) to warmer temps for my seedlings, this works well for my needs. piston runs vertical rather than horizontal (as with most), so piston doesn't stick downward and get in way when i need access the plants on the shelves. I adjusted the knob for extension to as far out as i could to limit the opening. this design doesn't have to go on mfg greenhouse, can be used for other types. Easy to install. Instructions give size 1 font and 1000 languages. Instructions are not good but if you have common sense, you can figure it out. Def use the "put it in the fridge instruction". The cold causes the wax inside to contract, making it easier to position. comes with lots of configuration hardware for attachment. i just screwed directly into my frame. customer service is quick to reply if you have questions. but they said it only works on the mfg greenhouse. not true

### ⭐⭐⭐⭐⭐ Pleasantly Surprised
*by D***. on May 14, 2013*

After reading many reviews on this product on Amazon and other seller websites it was hard to tell if it was a good product or not. I decided to take a chance and after having it in place for about a month now, I am quite pleased. I live in the Washington, DC area where spring has been all over the place, from mid to high 80s to last night's record cold. This temperature fluctuation gave me the perfect opportunity to test and fine tune this device. First, I have a Poly Tex Snap and Grow (6'x8'). Poly Tex is essentially the same a Palram. When I received the kit, the instructions called for placing it in the refrigerator for 30 minutes to enable the retraction of the tube. I actually cheated and put it in the freezer for 10 minutes (just make sure it is cold and you are not forcing it). Installing it was very easy; just unhitched the manual opener and put the auto opener right back in the same place. The afternoon I installed it was quite warm. I had gone back in the house and when I came out about 15 minutes later, the vent was fully open. Over the course of the next week, I made small adjustments to the opening temperature until I got it right where I wanted it. The adjustments are made quite simply by turning the round piece at the end of the tube. Turning the piece clockwise means your greenhouse will be warmer before it starts to open. Turn it counter-clockwise if you want the vent to open at cooler temperatures. It is a big inconvenience to have to watch the greenhouse every day and run out to manually open the vent. This auto vent kit has been working perfectly so far. Now that the hot humid DC summer is fast approaching, I update this review if it fails to perform.

### ⭐⭐⭐⭐ BEWARE: For ROOF, NOT SIDE LOUVER
*by M***L on June 25, 2020*

If you invest in a greenhouse, this accessory is a must! We installed it in our Palram greenhouse and I can’t say enough good things about the unit. It automatically opens and closes at around 68–70°. Unfortunately, you cannot adjust it to open a cooler or a warmer temperature – which for me is a drawback. The other drawback is that you cannot bypass the automatic opening and close it in the event of a storm for example, or if you want to put more humidity into your greenhouse. That said, the greenhouse warms quickly unless you are diligent enough to get up early in the morning and open the window manually. It should be noted however that this unit is NOT The one to use with the Palram side louver window. That is a completely different unit which functions the same but is built differently. Overall, I rated this unit four stars because it functions as it should and is worth the money for that reason. It could be improved upon if you could easily bypass the open and close, and perhaps also if you could adjust the open and close temperature a bit.

## Frequently Bought Together

- Palram - Canopia Automatic Roof Vent Opener for Greenhouses
- Palram - Canopia Plant Hangers for Canopia Greenhouses
- Palram - Canopia Heavy Duty Greenhouse Shelf Bundle (4 piece)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-27*