Established in 1990, Kuagj Kitchenware Co., Ltd. is a specialized China window opener manufacturer and design of kitchenware and cookware. Now we are starting pay attention to product R&D and OEM services. We have a highly skilled R&D team that actively expands our product range to meet changing market trends. Our custom window openers products meet GS, CE, ITS and UL approval standards.

Gas charged cylinder and piston rod, opens and closes window
Opening temperature range 59 degrees to 77 degrees Fahrenheit
Max. operating temperature: 122 degrees Fahrenheit
Lift capacity: 15 lbs
90 degree maximum opening angle
1-3/8'' travel, max. Adjustment knob allows setting Steel and aluminum construction; Overall dimensions: 10-3/4'' L x 3/4'' diameter
This vent control helps protect plants by stabilizing the temperature in your greenhouse or conservatory. Easy to install, the sealed unit costs nothing to run as it uses solar energy. Jemp Vent responds to temperature changes by opening and closing the roof vent automatically. Features adjustable temperature control and can lift up to 15 lbs (7kg).Adjustable opening and closing point. Very reliable for use in a greenhouse. It needs no electricity, the warmth from the sun makes the pressure cylinder open and to close there is a strong spring. Opening width 30 cm ( 1ft).

This Rion Greenhouse Automatic Roof Window Opener automatically opens and closes the Roof Vent when the outside temperature changes. The opener has a metal cylinder containing a mineral which explands when heated. 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. The opening and closing of the vent is gradual, allowing just the right amount of air flow for cooling.This Automatic Roof Window Opener has a 7-year warranty against manufacturer's defects and is very lightweight at 3 lbs. The opener can be installed on all Rion greenhouse roof windows.

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