Windows

The Janssens Automatic Louver Window Opener is an essential tool for maintaining the ideal temperature and ventilation in your Janssens Greenhouse. This innovative device automatically opens and closes the louver window based on the internal temperature, providing the perfect airflow for your plants.Using the natural expansion and contraction of minerals, the vent arm responds to temperature changes by pushing a piston to raise the window as the air warms, and closing it as the greenhouse cools. This reliable, spring-powered system operates without electricity, making it a low-maintenance and eco-friendly solution.Perfect for busy gardeners, the automatic louver opener ensures your plants receive the right balance of air and moisture, while minimizing the need for constant monitoring. It helps protect your plants and reduces the overall maintenance cost of your greenhouse.

Keep Pests Out and Fresh Air In with Janssens Fly Screens Tired of pesky flies and insects invading your greenhouse every time you open a vent or door? Janssens Fly Screens are the perfect solution to keep unwanted pests out while allowing fresh air to circulate freely within your greenhouse.These heavy-duty screens are custom-fitted to seamlessly cover greenhouse doors, roof vents, and louvers, ensuring that insects stay outside where they belong. Easy to install with secure clips and fasteners, the screens are designed for convenience and durability.The door screen operates on a smooth sliding track from the inside of the greenhouse, allowing for effortless opening and closing while maintaining full protection. With Janssens Fly Screens, you can enjoy optimal ventilation without compromising your plants' health. Install these essential accessories today and experience a noticeable improvement in your greenhouse environment.Comes pre-assembled with no assembly required Does not interfere with function of automatic openers Includes slot/brush seal to allow for window opening device Provides additional non-chemical protection for plants from insect pests Dimensions: Available in sizes to fit roof vents and louvers Installation: Simple clip installation Louver screens are attached on exterior of greenhouse Roof screens are mounted underneath window Screen door is mounted on a sliding track inside the greenhouse

Boost Your Greenhouse Ventilation with an Extra Janssens Skylight!Need a little more airflow in your greenhouse? Add an additional Janssens skylight for improved ventilation. This roof window is identical to the one included in your greenhouse kit, offering seamless integration. Perfect for enhancing air circulation, especially during warmer months, this extra skylight ensures your plants get the optimal growing environment they need. Give your greenhouse a breath of fresh air by simply adding another skylight!

Enhance Ventilation with the Janssens Push-Out Side Window. Is your greenhouse in need of better airflow? Give your plants the fresh air they crave with the Janssens Push-Out Side Window, a perfect addition to boost cross-ventilation in your greenhouse. This side window is an excellent alternative to the louvered window, offering a sleek and functional solution for improved air circulation.Specifically designed to complement the elegance of Janssens greenhouses, this top-hung window features a convenient push-open design that allows for effortless operation. The window can be easily installed on any wall of your Janssens greenhouse, helping to create a healthier environment for your plants by ensuring they receive the ventilation they need.

Improve Janssens greenhouse ventilation and create the perfect environment for your plants or lounge with a glass louvered window. Designed to complement your Janssens greenhouse, this addition ensures that your interior is well ventilated and at the ideal temperature for plant growth.To meet different needs and preferences, it has a clear Lexan hood panel for frost protection. Choose a manual or automatic (non-electric) opening window mechanism to adjust the greenhouse ventilation system according to your preferences and needs. It is possible to install a mosquito net on the window

The Spindle Opener for Roof Window allows manual ventilation in your Janssens Greenhouse. A spindle opener is great in windy locations because it secures the window and you can decide when to open and close it.The spindle opener is attached to the frame and the roof window. By spinning the pole, you can open and close the roof window as much as you want. It is reliable in unfavorable weather situations preventing windows from smashing and shattering window panes.

Ensure your greenhouse maintains the perfect climate with the Janssens Storm Automatic Door & Window Opener. Designed for convenience and efficiency, this opener automatically regulates the temperature inside your greenhouse by opening and closing windows without the need for manual intervention or external power.The secret lies in the temperature-sensitive gel contained in the cylinder, which expands as temperatures rise, lifting the window to allow fresh air in, and contracts as it cools, closing the window to retain warmth. Ideal for those times when you're away or can't tend to your greenhouse, this maintenance-free device is a must-have for busy gardeners.For optimal airflow, we recommend installing at least two openers on opposite sides of the roof to ensure efficient air circulation. The Storm Opener is built to withstand harsh conditions, including strong winds, thanks to its durable construction, reinforced piston, and additional shock absorber.This robust opener can lift windows weighing up to 12 kg and begins to open at temperatures between 17-25ºC, reaching full opening at 30-32ºC. With a maximum opening height of 38-40 cm, it offers excellent ventilation for your plants.Crafted from painted aluminum, it is available in a sleek black lacquered finish. For long-term durability, the manufacturer recommends unscrewing the opener cylinder during the winter months.Lifts windows up to 12 kgCompletely power-free operationStarts to open at 17-25ºCMaximum opening at 30-32ºCMade from painted aluminum for strength and durability