Thermofor Automatic Heavy Duty Greenhouse Window Roof Vent Opener

Complete kit ready to install with easy to follow instructions.

Thermofor automatic heavy duty greenhouse window roof vent opener. Automatic roof vent opener cat no. A great way of preventing greenhouses from overheating. This model is fitted with a heavy duty double spring mechanism designed for use in exposed locations or on lightweight polycarbonate glazed vents which do not have sufficient weight to prevent the wind opening the vent unintentionally. How to choose an automatic opener for your greenhouse vents.

Keep your greenhouse cool and your plants healthy with our selection of greenhouse roof and side vents automatic vent openers poly side and endwall venting and aluminum shutters. This model is an attractive cost effective unit with a unique opening action ensuring a smooth twist free operation and with the cylinder mounted within the bracket to eliminate. Hd3200 this opener is the latest in a line of thermofor roof vent openers designed and manufactured over the past 70 years. 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.

Valensha solar heat sensitive automatic thermofor window opener greenhouse autovent vent greenhouse vent window opener roof opening tool 3 0 out of 5 stars 1 27 99. Thermofor heavy duty dual spring automatic greenhouse window opener hd3400 autovent automatically opens and closes your greenhouse window as the temperature changes. Our products range from the heaviest duty to the most economical. Thermofor automatic greenhouse roof window opener autovent.

Automatic roof vent opener. 7 triple spring mk. Greenhouse vents auto vent openers louver windows shutters roof vents. This opener is the latest in a line of thermofor roof vent openers designed and supplied over the past 50 years.

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. Automatic openers automation of both roof and side louvre vents are an excellent and hugely popular choice with customers. Most greenhouses are aluminium or timber and have 2 foot square glass panel windows in the roof with a simple hinge in the ridge bar these vents are ordinarily opened and closed using a window stay kit which consists of a bar with holes in it and corresponding pegs to prop the window open in most areas. This model is fitted with a heavy duty double spring mechanism designed for use in exposed locations.

It is finished in a durable polyester powder coating and is corrosion resistant throughout. Offering peace of mind when you are at work or on holiday ventilation is provided automatically via a solar powered wax cylinder which opens or closes the vent when the temperature inside the greenhouse reaches a certain.