The Thermofor HD3400 Heavy Duty Automatic Window and Roof Vent Opener is the ideal accessory to give much needed ventilation to your greenhouse.
With the same unique action and smooth twist free operation as the HD3200 this unit incorporating double upper arms has a stronger bracket assembly and includes extra strong springs to provide a very positive closing action.
It is recommended for use on both aluminium and timber roof and top hung side vents, particularly light polycarbonate glazed, in exposed areas to reduce wind snatch effect and provide increased resistance to wind flutter.
Finished in a durable polyester powder coating and corrosion resistant throughout.
It will lift up to 6 kg (13.25lbs), i.e. a vent weighing up to 12 kg (glass area not exceeding 0.65m² in an aluminium frame), with a maximum opening of 35cm (14 inches).
Designed and supplied by the same manufacturer over the past 50 years.
Simple and Easy to fit thanks to the comprehensive instructions included
O% APR Representative example. Credit subject to status and minimum order value.
Welcome to Gardenbox, the home of great quality BBQ's, Grills, Pizza Ovens, Outdoor Heaters and all the tools you'll need for your BBQ and Outdoor cooking. We also offer a superb range of luxury Garden Furniture, beautiful hand-built Wooden Greenhouses, made right here in the UK, from Swallow and Gabriel Ash plus all the Accessories you'll need for your Greenhouse as well as plethora of other affordable Gardening and Outdoor Products, delivered to your home across the UK.
We are a young and energetic company who strive for high quality customer service. We want HAPPY customers and therefore endeavour to source the best quality gardening and outdoor products available to you, some of our items you will not find in your local garden centre, and deliver them direct to your door.
Our range of products is always growing, so browsing through the Gardenbox ranges will take you from Gas and Charcoal BBQs, Wood-Fired and Gas Pizza Ovens, through Garden Furniture, Greenhouses, Outdoor Living and Patio items, and Garden Tools.
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Thanks for finding us, we hope we have the opportunity to provide you with a perfect addition to your garden or outdoor space and we wish you a happy and prosperous shopping experience.