TWO BAYLISS XL Autovents - full retail packages

We also sell this model in single quantities please see our other listings

 Brand new stock available for immediate despatch.

Offered with a manufacturer backed full 2 year guarantee.

Opens greenhouse roof vents as the temperature rises, automatically closes as temperature drops.

Automatic Greenhouse Window Opener, Simple, Strong & Easy to Fit. Made Entirely in the UK

  • Easy to fit - Screws into wood and clamps onto aluminium greenhouses without the need for drilling. (Full fitting instructions supplied)
  • Easy to set - one simple adjustment
  • Solar powered - Non electric
  • Strong build
  • Loses no headroom
  • Anodised aluminium construction - All parts corrosion resistant
  • Spring controlled - Resists wind damage when opening and closing
  • Quality assurance - All parts guaranteed for 2 years

Suitable for opening hinged vents up to around 2ft square (600mm) of normal construction.

Please look carefully at the third photograph as this clearly shows the standard type of greenhouse vent and slam bar that these autovents are designed to fit. If you have one of the "trapped polycarbonate" type of greenhouse which are currently being sold on the internet there is nothing for the clamps to fit onto and these units will not be suitable for you.

We also stock all Bayliss Mk. 7 variants and several autovent models from Thermofor - a standard model and a heavy duty double spring model for use in exposed locations. We also supply the side louvre vent openers as well as spare cylinders for all the autovents we sell. 

De - Automatische entlüftung Fürgewächshäuser

Fr - Ouverture automatique de lucarne

Dk - Automatisk vinduesåbner

Please look at our other items in our ebay shop

We are a specialist greenhouse supply and build company based in East Yorkshire that sells nothing else but quality greenhouses and accessories. We do not sell hundreds of lines that we know little about, we have tried and tested everything we sell and are completely confident in our products and service.

Many thanks for looking.