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Bayliss MK7 Triple Spring Auto Vent Opener bayliss, opener, vent, auto, window, automatic, solar, mk7, roof, side, louver, greenhouse, air, orchid, wax, autovent
Price: $69.95
Availability: In Stock

    These Bayliss MK7 openers have three heavy-duty springs which gives the opener superior closing power making it ideal for side wall vents and roof vents in windy areas. Opening temperature is adjustable (Ranges shown below). Maximum opening of 12" is reached at approximately 20° to 30°F above opening temperature. Bayliss MK7 vent openers are made from the best corrosion resistant materials: stainless steel, anodized aluminum, and brass. These are recommended for use with Cross Country...

    Gigavent Auto Vent Opener vent, window, opener, roof, automatic, solar, auto, greenhouse, cold, frame, gigavent, wax
    Price: $129.00
    Availability: In Stock
    Item #: 8040150 -

      This is the strongest vent opener available with a lifting capacity of 65 lbs. It has a hydraulic cylinder which provides superior protection in windy areas. Opening temperature can be adjusted from 56° F to 70° F and maximum opening of 18" is reached at approximately 20° F above opening temperature. Gigavent cylinder can be located in many different positions for maximum mounting flexibility. This model is too large for use with all of our greenhouses except some of the Cross Country...

      Univent Automatic Vent Opener vent, opener, univent, automatic, solar, window, greenhouse, roof, auto, cold, frame, wax,
      Price: $38.95
      (1)
      Availability: In Stock
      Item #: 8040120 -

        The Univent allows solar powered control of top and side mounted window vents thanks to its dual springs. Univent window openers have an adjustable opening temperature of 60° F to 75° F and an 18" maximum opening which would be reached at approximately 20° to 30°F above opening temperature. Univent openers are made from corrosion resistant materials including aluminum and stainless steel. Univents also feature a unique quick disconnect feature on the bottom of the unit which is useful when...

        Ventomax Automatic Vent Opener vent, opener, ventomax, automatic, solar, window, greenhouse, roof, auto, cold, frame, wax, orbesen, teknik
        Retail: $31.95
        Price: $24.95
        (1)
        Availability: In Stock
        Item #: 8040160 -

          The Ventomax opener allows solar powered control of top mounted window vents for a very affordable. Ventomax window openers have an adjustable opening temperature of 60° F to 75° F and an 18" maximum opening which would be reached at approximately 20° to 30°F above opening temperature. Ventomax openers are made from corrosion resistant electro galvanized steel painted black. Order more than one and save! Features Adjustable opening temperature of 60° F to 75° FMaximum opening of...

          Bayliss MK7 Replacement Power Tube bayliss, mk7, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part
          Price: $26.95
          Availability: In Stock

            Bayliss power tube life is not infinite. Over the years, the piston moving through the seals gradually wears the seal material away, allowing a gradual seepage of wax out of the tube. This in turn reduces the pressure within the tube and eventually the opening distance achieved will be affected. This is when you need to replace the power tube cylinder.Bayliss MK7 power tubes are available with 2 different models. The only difference is the operational temperatures of the power tube. The Orchid...

            Gigavent Replacement Power Tube gigavent, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part
            Price: $69.95
            Availability: In Stock
            Item #: 8040155 -

              This cylinder tube powers the Gigavent automatic openers with no need for electricity. It contains a mineral wax which expands with heat. This pushes a piston which opens the auto vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong spring closes the vent and resets the piston.While this cylinder for the Gigavent automatic vent opener lasts a long time, eventually the piston rod moving through the seals will wear the seal material away, allowing a gradual seepage...

              Univent / Ventomax Replacement Power Tube univent, power, tube, cylinder, replacement, spare, piston, vent, opener, rod, part, ventomax
              Price: $19.95
              Availability: In Stock
              Item #: 8040130 -

                This cylinder tube powers the Univent and Ventomax automatic openers with no need for electricity. It contains a mineral wax which expands with heat. This pushes a piston which opens the auto vent via a balanced linkage. As the temperature drops, the wax shrinks and a strong spring closes the vent and resets the piston. While this automatic vent opener cylinder lasts a long time, eventually the piston rod moving through the seals will wear the seal material away, allowing a gradual seepage of...