Thermofor Automatic Heavy Duty Greenhouse Window Roof Vent Opener

Thermofor heavy duty dual spring automatic greenhouse window opener hd3400 autovent automatically opens and closes your greenhouse window as the temperature changes.

Thermofor automatic heavy duty greenhouse window roof vent opener.

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 quality greenhouse vent opener automatically opens and closes your greenhouse window as the temperature changes. 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. Automatic roof vent opener.

This model is fitted with a heavy duty double spring mechanism designed for use in exposed locations. Hd3200 this opener is the latest in a line of thermofor roof vent openers designed and manufactured over the past 70 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 roof vent opener cat no.

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. Greenhouse vents auto vent openers louver windows shutters roof vents. 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. 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 projection in the. Thermofor automatic greenhouse roof window opener autovent. Automatic openers automation of both roof and side louvre vents are an excellent and hugely popular choice with customers.

Complete kit ready to install with easy to follow instructions. It is finished in a durable polyester powder coating and is corrosion resistant throughout. 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. 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.

Our products range from the heaviest duty to the most economical. 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.