---
product_id: 41083504
title: "Grandio Automatic Greenhouse Roof Window Vent Opener"
brand: "grandio greenhouses"
price: "€ 140.54"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/41083504-grandio-automatic-greenhouse-roof-window-vent-opener
store_origin: PT
region: Portugal
---

# Grandio Automatic Greenhouse Roof Window Vent Opener

**Brand:** grandio greenhouses
**Price:** € 140.54
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Grandio Automatic Greenhouse Roof Window Vent Opener by grandio greenhouses
- **How much does it cost?** € 140.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/41083504-grandio-automatic-greenhouse-roof-window-vent-opener)

## Best For

- grandio greenhouses enthusiasts

## Why This Product

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

## Description

Automatically opens and closes the roof vent/window when temperature changes. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.

## Features

- Opens roof vent automatically as temperature warms for air circulation and heat relief, Closes when temperature cools
- Starting opening point: 75° F to 80° F
- Solar powered, heat activated
- No electricity needed

## Images

![Grandio Automatic Greenhouse Roof Window Vent Opener - Image 1](https://images-na.ssl-images-amazon.com/images/I/41ugetp0DfL.jpg)

---

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**Shop now:** [https://www.desertcart.pt/products/41083504-grandio-automatic-greenhouse-roof-window-vent-opener](https://www.desertcart.pt/products/41083504-grandio-automatic-greenhouse-roof-window-vent-opener)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-03-17*