Lacewing™ Essential Automatic Vent Arm Window Opener / Autovent

Code: GH0476
Lacewing™ Essential Automatic Vent Arm Window Opener / Autovent
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Lacewing™ Essential Automatic Vent Arm Window Opener / Autovent
Lacewing™ Essential Automatic Vent Arm Window Opener / Autovent

The autovent window opener is an all-in-one solution for greenhouse temperature control. Using a cleverly designed pressure system, the arm opens the window if the greenhouse is over a preset temperature, and closes the window below this temperature. Care for your greenhouse plants, even when you're not at home.

  • Automatically opens and closes window at preset temperature - increases air flow and relieves your plants in hot temperatures
  • Fully adjustable to open between 15°-20°C - set the temperature the window will open and close at to care for your specific plants and climate
  • Opens up to 35cm wide - opens wide to encourage air circulation
  • Mechanical system activated by heat - no electricity needed, which means no running costs
  • Perfect for windows that weigh up to 7kg - opens nearly all greenhouse windows
  • Chrome coated metal - increased corrosion resistance
All greenhouses need to be well ventilated on hot and sunny days to keep plants in optimum growing conditions. The automatic vent arm uses captured gas which expands in hot temperatures, opening the window without any running costs. The simple but smart mechanism will maintain optimal temperatures at all times, whether you are or aren't at home. You can adjust the opening temperature between 15° and 20°C to suit your individual needs. Simply install the vent opener by using the instructions and let it do its job.


Length: 32cm (1ft ½in) x Depth: 5cm (1¾in) x Height: 4cm (1½in)
Max. opening width: 35cm (1ft 5⅔in)

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Customer Reviews
Rating: 4/5

"Materials used care good quality"

Reviewed Wednesday, 14 November 2018

Rating: 4/5

"For the money paid this greenhouse was excellent quality and the finished article looks great"

Reviewed Wednesday, 26 September 2018

Rating: 2/5

"Could not fit this to this greenhouse - although clearly it works as you can see the arm moving"

Reviewed Friday, 18 May 2018

Rating: 1/5

"my thoughts are not fit for publication."

Reviewed Tuesday, 20 February 2018

Rating: 5/5

"Every greenhouse needs one"

Reviewed Tuesday, 23 January 2018

Rating: 4/5

"Arrived promptly and fitted"

Reviewed Tuesday, 14 November 2017

Rating: 5/5

"As previous couldn't be happier"

Reviewed Tuesday, 14 November 2017

Rating: 4/5

"The product works well when finally installed, but instructions are sketchy and don't matvh all the components sent, there being some extra items that don't seem to be needed. The method dhown of connecting to the opoening window are incomplete."

Reviewed Friday, 7 April 2017

Rating: 5/5

"very good packaging, and quick delivery"

Reviewed Saturday, 14 November 2015

Rating: 5/5


Reviewed Tuesday, 23 June 2015

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