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Automatic Openers for roof vents are a must and are also available for fitting to louvre vents. Automatic openers overcome the problems of rapid changes in weather conditions - they react to the heat, so that vents are opened when temperatures increase, without you having to be there. The best known automatic vent openers on the market are Bayliss Autovents which have been manufactured for over 40 years. These automatic openers can be used on both wooden or aluminium greenhouses. Fitting automatic openers to roof vents and louvre windows means that you don't have to try to predict the weather conditions - these automatic openers simply react to the temperature, opening vents when temperatures increase and closing them when temperatures fall.
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This Bayliss XL is an extremely reliable automatic vent opener.
The opener is activated by a stainless steel cylinder containing a mineral wax which expands with heat; this pushes a piston causing the vent to open. As the temperature falls the wax contracts and a strong stainless steel spring closes the opener.
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Suitable for use on nearly all greenhouses this Bayliss MK7 is an extremely reliable, British made, automatic vent opener.
The bayliss Mk7 vent opener is operated by a stainless steel cylinder containing a mineral wax which expands with heat; this pushes a piston causing the vent to open. As the temperature falls the wax contracts and a strong stainless steel spring closes the opener.
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This Bayliss MK7 Triple Spring is an extremely reliable automatic vent opener.
This particular unit is designed to be fitted to top hinged, side windows or exposed roof vents, the three springs fitted are designed to hold the windows / vents firmly in place in windy conditions, and with the extra springs, to exert a greater closing force.
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An extremely reliable automatic vent opener with unique features.
The Bayliss Hydraulicheck Vent Opener has a small hydraulic damper which causes the vent to open s, Lowly but to close very quickly making the opener suitable for use on greenhouse roof vents in exposed areas, the unique damper will prevent the vent from being wrenched open in high winds and subsequently damaged.
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Specially designed for use in greenhouses where a higher temperature is required, this Bayliss MK7 Orchid House Vent Opener is an extremely reliable and is British made.
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This extremely reliable automatic vent opener, the Bayliss MK7 Super has been designed to lift very heavy double-glazed windows weighing up to 35 lbs. (16kg).
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This easy to fit Replacement Cylinder is suitable for the Bayliss XL vent openers manufactured since 2001.
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This Replacement Cylinder is suitable for the Bayliss MK7, MK7 Triple Spring and Hydraulicheck automatic openers.
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Specialist power tube designed for use in greenhouses and conservatories that require a higher opening temperature, I.E. Orchid Houses.
This Replacement Cylinder is suitable for fitting to the Bayliss MK7, MK7 Triple Spring and Hydraulicheck automatic openers.
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This Replacement Cylinder is suitable for the Bayliss MK7 Super Vent Opener.
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This Automatic Louvre Opener, opens and closes your Louvre Window as the temperature changes.
Making sure your greenhouse does not overheat whilst your at work or away on holiday.
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An easy to fit replacment cylinder for the Automatic Louvre Opener manufactured by Thermoforce.
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