Automatic Greenhouse Window Vent Opener

The opener has a metal cylinder containing a mineral which expands when heated.

Automatic greenhouse window vent opener. This pushes a piston that opens the vent. As the temperature cools the mineral shrinks and a spring closes the vent and resets the piston. How automatic vent openers work. G more greenhouse automatic window opener automatic vent opener with double spring solar vent roof opener replacement cylinder temperature control with solar power sensor window vent opener 35 99 35 99.

The automatic vent opener operates without the use of electricity and is compatible with all palram greenhouse models only. Many of the automatic vent openers that we examine below are capable of being screwed directly into panels of polycarbonate metal frames as well as wood. Our products range from the heaviest duty to the most economical. Estink automatic window opener solar heat sensitive greenhouse autovent vent opener standard lifts 15 lbs.

Only 20 left in stock order soon. Bibistore auto vent greenhouse window opener with two springs solar automatic ventilation openers for hothouse cold frame gardening tools no power needed lifts 30 lbs 4 1 out of 5 stars 8 38 89 38. Greenhouse window opener auto vent solar heat sensitive automatic vent opener greenhouses roof lifts 15 lbs. Automatic vent openers are ideal solutions for venting greenhouse windows cold frame lids as well as skylights automatically opening them to help control the climate and temperature.

Bibistore solar auto vent window opener for greenhouse heat sensitive automatic ventilation openers black powder coating steel roof vent kit lifts 15 lbs no power needed single spring 37 99 19 just e joy greenhouse automatic window opener solar sensitive cylinder replacement temperature sensor vent opener part black 1pcs. Temperature activated greenhouse window openers these automatic greenhouse vent openers are typically used in greenhouses and conservatories to automatically keep them at the right temperature to help you choose what greenhouse window openers you may require please see our greenhouse autovent selection guide. Iliving 20 wall mounted exhaust fan automatic shutter variable speed vent fan for home attic shed or garage ventilation. Greenhouse vents auto vent openers louver windows shutters roof vents.

4 5 out of 5 stars 132. Opens roof vent automatically as temperature warms for air circulation and heat relief closes when temperature cools mechanic system solar powered start opening point.