Bayliss Greenhouse Autovents

An auto-vent opens and closes a hinged vent automatically using energy from the warmth of the sun or the surrounding air. The hotter it gets, the wider it opens the vent. See more technical information.

Bayliss autovents - the most trusted and best quality automatic vent openers

Adequate ventilation is one of the most important aspects of greenhouse growing and our autovents take the guesswork out of this all important operation, ensuring accurate, continuous venting 24 hours a day.
Bayliss autovents are suitable for both wooden and aluminium windows and frames and the wide range available means that even if you require an autovent for a windy location or to lift heavy double glazed conservatory or greenhouse vents, we have an autovent to suit your needs.

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Mk 7 Standard Autovent Designed for aluminium or timber framed vents measuring up to 60cm square.	Mk 7 Triple Spring Autovent Greenhouse autovent suitable for opening top hung aluminium or timber framed vents.
Mk 7 Hydraulicheck Unit Addition of Hydraulicheck creates an autovent suitable for use in severe weather.	XL Autovent "Clip-on" model lifting a load of up to 5.5kg and a maximum opening of approx. 12".
Mk 7 Super Autovent Similar to the Mk 7 model but larger, suitable for operating heavy double glazed vents.	Mk 7 Super Victorian Unit Attractive and useful addition to the Victorian period style conservatory.
Replacement Power Tubes, Conversion Kits, Screw Packs and Accessories Replacement equipment and autovent accessories to maintain a healthy and long lasting efficient autovent

Choose Bayliss Autovents - Best Buy!

	Mk7 Standard Selected 'Best Buy' in Amateur Gardening Magazine 4th May 2013 Build * * * * * Features * * * * Performance * * * * * Value * * * * *

Bayliss Greenhouse Autovents have been produced since 1964 by our family business in Derbyshire in the UK. Our autovents have been designed by our precision engineers and are completely sourced within the UK.

As specialist precision engineers, we are proud of the reputation we have for design, quality, reliability and service. Bayliss are the original designers of the mechanism which keeps the vent entirely within the window frame. We offer a range of autovents that covers almost any automatic ventilation requirement you may have.

Beware of imitators! Bayliss have led the way in autovent design and quality over many years and our automatic vent openers are widely recognised as the most reliable autovents available today.

Corrosion resistant construction	Balanced lifting action
Illustrated fitting instructions	Alternative finishes and colours
Customisable designs	Manufacturer's Guarantee