Heat activated window opener

By Brand By Category.

This product is not available in this region, you can submit your inquiry here and we will get back to you. The Automatic Vent Opener was designed to automatically control the temperature and humidity levels. It provides additional ventilation for all Palram — Canopia Greenhouses, making gardening easier. As the air inside the greenhouse warms, the vent gradually opens to allow the correct amount of airflow into the greenhouse until the optimal temperature is reached. The vent arm was designed with the use of wax that expands with heat and contracts when it cools.

Heat activated window opener

We noticed you are accessing from Canada. Change to Lee Valley Canada website to see content specific to that region and the best shipping options. Product cannot be added at this time. Choose an option to add an item to your cart. Check availability at all stores. Controlling temperatures in a cold frame or greenhouse is straightforward with this automatic control. It incorporates a gas-charged cylinder of adjustable volume. As the temperature rises, the gas expands; it will open a 15 lb window, more than adequate in cold frames and greenhouses. A simple adjustment lets you control the operating range. Product Added To WishList. QTY: 0. An Error has occured, please try again. Yes, take me to Lee Valley Canada Cancel. Add to Cart Sold Out. Choose an option to view item availability.

This is our best hobby vent opener. Pipe Size: Choose an option. Contact us now for more information.

Compare Kits. Solar Harvest. Climate Controls. Containers Plant. Deer Repellent. Electrical Supplies. Grow Lights.

Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges. Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive. Ideal for your greenhouse window opens and closes your greenhouse window. As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating. Non electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops. Can be clamped onto or screwed onto your greenhouse frame. It needs to put the cylinder in the refrigerator for a period of time half an hour is enough before the cylinder screw into cylinder housing.

Heat activated window opener

We noticed you are accessing from Canada. Change to Lee Valley Canada website to see content specific to that region and the best shipping options. Product cannot be added at this time. Choose an option to add an item to your cart. Check availability at all stores. Controlling temperatures in a cold frame or greenhouse is straightforward with this automatic control. It incorporates a gas-charged cylinder of adjustable volume. As the temperature rises, the gas expands; it will open a 15 lb window, more than adequate in cold frames and greenhouses. A simple adjustment lets you control the operating range.

Avalon preamp

Evaporative air coolers, also called pad or swamp coolers, have proven to be the most effective cooling system for a greenhouse short of an air conditioner. Being completely environment-friendly automatic greenhouse window openers are a must-have for any gardener. The standard Mk 7 autovent is supplied in a satin anodised finish but is also available epoxy powder coated white, green or brown to special order. Previous Next. Automatic Ventilation opener — Ventilation in greenhouses Offered to your customers that wish a wide range of applications. Fitting Instructions MK7 Standard. Case Studies. This model is too large for use with all of our greenhouses except some of the Cross Country models. Product Catalogue. After minimal adjustment, opens at about degrees. How automatic vent openers work: Vent openers do not require electricity.

Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive.

They are designed and tested to last for many years and are fully serviceable. Order Tracking. Powertubes are interchangeable. Greenhouse Autovent Selection Guide. Available epoxy powder coated white or brown as standard. Coolers have a 2 speed fan which can be used for ventilation with or without wetting the pads. Season Extenders. Closes when temps fall below that. This is our best hobby vent opener. Other Supplies. This product is not available in this region, you can submit your inquiry here and we will get back to you. The piston rod is completely sealed off in an aluminium enclosure. Fans include a 6 ft.