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GardenersDream Bayliss Mk7 Greenhouse Automatic Ventilation Window Opener Or Replacement Tube

  • From £18.99
  • RRP £20.99
Item out of Stock   |   Usually dispatched within 24 hours
  • Suitable for opening greenhouse roof windows 76cm x 76cm weighing up to 26lbs
  • Designed to open the window automatically when temperatures increase
  • Works by wax within the cylinder of the opener expanding when it's hot, pushing a piston to open the window.
  • When it's cool the wax contracts and stainless steel springs close the window.
  • Suitable for aluminium or wooden greenhouses

Provides a maximum opening distance of 12 inches (30cm) and can be set to start opening at approx. 55F (12o). Supplied with full fixing kit and instructions. The standard Mk 7 autovent is supplied in a satin anodised finish but is also available epoxy powder coated white, green or brown.

Designed for aluminium or timber framed vents measuring up to 60cm square (2ft square) lifting a load of up to 6kg (14lbs).

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We will endeavour to dispatch your goods on the same day your order is placed if it is received before 7 am (Mon-Fri). If your order is received over a weekend it will be dispatched on Monday. We only ship to the United Kingdom.



Standard Delivery

Our free postage is available on all orders regardless of total price.

Express Delivery

Our express delivery service for £3.99 offers your items to be sent on a 24hr courier for orders you need urgently. (Please note DX do not deliver on Saturdays on most occasions)


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