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Palram Greenhouse Automatic Vent Arm

Palram Greenhouse Automatic Vent Arm

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Product Code [701338]

Our Price: £37.99 RRP: £45.99


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Palram Automated Vent Opener

The Palram Automated Greenhouse Vent Opener automatically controls the climate in your greenhouse by opening the roof vent when the greenhouse gets hot, then closes when the temperature cools. It responds to weather changes without you needing to be near the greenhouse. The opening temperature can be adjusted for your specific needs. The auto vent opener is completely mechanical - no batteries or electricity required.


  • Opens when temperature gets too hot
  • Closes when the air cools
  • Mechanical system - no batteries or electricity required
  • Adjustable opening temperature
  • Automatically responds to weather changes
  • No need to stay near greenhouse
  • Easy DIY assembly 

Quality Construction

The Palram Automatic Vent Opener is a quality product.  It is fully mechanical and doesn't require batteries or mains electricity.

Low Maintenance

The auto vent opener is designed to be a maintenace free product, and will give years of trouble-free use. Occasional oiling of hinged parts is recommended to avoid stiffness following prolonged periods of inactivity.


All products are delivered sectional/flat-packed unless stated otherwise. Information shown above has been supplied by the manufacturer, and is as accurate as possible (errors and omissions excepted), however they are intended only as a guide. *The free delivery service covers mainland England, Wales and most of Scotland. Delivery to the Scottish Highlands, or off shore will be subject to an additional charge by the manufacturer (see restrictions below). NO ADDITIONAL CHARGE WILL BE LEVIED IF ORDERING WITH A GREENHOUSE.

Delivery Areas Manufacturers Delivery Surcharge
Mainland UK England, Wales & Most of Scotland FREE
Scottish Highlands IV, KW, KY, PA20-49, & PH postcodes FREE
Offshore Including I.O.W. Isle of Man, Shetland, Ireland, etc.. P.O.A.
Delivery lead times are normally 1-3 working days, and are typical for most areas (although remote areas may take slightly longer). Please check before ordering.


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IMPORTANT: Imperial sizes shown in the description are approximate, and are provided by the manufacturer purely as a guide. Please refer to the metric dimensions for more accurate sizes, or contact us prior to purchase if you have any specific requirements.