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£ 39.00
Delivery in the New Year
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Delivery of this item to Mainland England and Wales is £4.95, parts of Scotland and Northern Ireland may be subject to a higher charge. Delivery costs will be calculated and displayed at checkout before any payment is required.

Please note if any other items in your basket are quoted with a longer delivery time, then your items will not be dispatched next day, but within the time period quoted for item with the longest delivery.

There is only one charge for delivery per order.










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  • Robinsons Auto 6 slat louvre opener D474

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    £ 45.00
    Robinsons Auto 6 slat louvre opener D474

    Automatic opener with specific fixing kit to suit Robinsons louvres. It will fit all of the current range of Robinsons greenhouses, including the Victorian models, using a Robinsons D361 6-slat louvre. Please note an auto louvre can NOT fit where the handle is adjacent to an a-frame. 


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  • Thermofor Auto louvre opener

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    £ 37.00
    Thermofor Auto louvre opener

    This mechanical device is designed to automatically open and close a louvre vent, in response to temperature.


    A wax-like substance, contained in the cylinder, expands with heat, operating a piston which opens the louvre via a linkage arm. As the temperature falls, the process reverses, and a spring closes the louvre. There is also an adjustment knob, which enables the opening temperature to be altered to between 15 and 25 degrees centigrade.

    Some simple drilling is required to fit the opener to the side of the louvre vent.

    Hand made by us in our Staffordshire workshop, trade enquiries welcome from all around the world

    This product does NOT fit the Hercules OCTAGONAL range of buildings


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  • Alton Evolution auto louvre opener

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    £ 45.00
    Alton Evolution auto louvre opener

    Automatic attachment for a Louvre vent, fits most louvres.  Its fully adjustable to open over a range of temperatures.

    Some drilling is required to fit.


    Please note that an auto louvre can NOT fit a louvre which is directly left of an a-frame when you look at it internally without extra packing. 


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Quantity required
Thermofor

A new double arm opener from Thermofor.

The double arm design adds strength and closing power, making it ideal for windy conditions and side vents where more closing power is needed,

The twin springs provide a massive closing force and  reduce the chances of the vent from being caught by strong winds.

Designed to be fully compatible with Robinsons greenhouses straight out of the box with no further parts needed. Also supplied with clamps so that it can be fitted to any aluminium or wooden greenhouse


These amazing devices are made in our own workshop in Staffordshire

• Opens your greenhouse roof vent automatically as the greenhouse heats up

• Provides ventilation to plants when they need it most

• No electricity required - powered by heat expansion alone!

• Easy to fit - adaptable to any aluminium or wooden greenhouse On most aluminium greenhouses, it simply clamps on.

 

Fitting an auto opener can help you regulate the temperature in your greenhouse and maximises the potential of the roof vents. Controlled by heat alone they do not take batteries or need an electricity supply. 

The unit can be adjusted to change the operating temperature to suit.

Guaranteed for two years.
Trade enquiries also welcome from all around the world.


 

Q. Do you have fitting instructions on-line for the Classic auto vent opener, please? (I can't find mine!)

A. We have a great technical help section on our web-site (http://www.greenhousepeople.co.uk/technical_help). If the instructions for what you require do not appear then we always keep spares at our Head-Quarters to e-mail or post to you. Don't forget our technical help team who are available to e-mail on technical.

Q. Are replacement cylinders available for the Thermofor roof auto vents?

A. Replacement cylinders can be order from us. Search for product ID 19597

Q. Will this item fit my old Eden greenhouse?

A. Hello, it should do yes. The classic openers are the most universal ones as they just clamp on to the frames.

Q. Can your auto openers be used on any greenhouse, specifically Halls? Thanks

A. Hello, yes the product id: 51 should fit on a Halls greenhouse.

Q. Hi, Can these be fitted on polycarb greenhouses please and can they be fitted on a pre existing greenhouse or must they go in when it’s built? Many thanks

A. Hello, yes they should work on polycarbonate or glass greenhouses.


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1 reviews of Thermofor MAXI-PLUS Double Arm auto opener for greenhouse vent
Average rating: (5.0)
15/05/2024
by Alan Roberts

Excellent product,strong well made ,easy to fit,does the job well

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File Type: PDF

Thermofor Double Arm instructions - Click here to view

To download the file, right click and select 'Save Target As'.
File Type: PDF

Thermofor on Robinsons instructions - Click here to view

To download the file, right click and select 'Save Target As'.

Delivery of this item to Mainland England and Wales is £4.95, parts of Scotland and Northern Ireland may be subject to a higher charge. Delivery costs will be calculated and displayed at checkout before any payment is required.

Please note if any other items in your basket are quoted with a longer delivery time, then your items will not be dispatched next day, but within the time period quoted for item with the longest delivery.

There is only one charge for delivery per order.










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