Top Greenhouses Ltd.

Top Max Greenhouses

Top Max greenhouses are designed to be covered with polycarbonate sheets. Their high insulation properties are suitable in cold climates. They typically are designed with 3' columns every 4 meters, but may be reinforced to handle the weight of snow, with columns placed ever 2 meters. A lateral roof vent enables controlled use of natural ventilation. Like other Top Greenhouse models, Top Max Greenhouses offer the maximum capacity for environmental and climate control by using computer-operated, automated systems.

Top Max comes in 3 diffrent options

  • No roof window
  • Single roof window (motorized with rack & pinion system)
  • Double roof window (motorized with rack & pinion system)


Greenhouse Specifications

  • Gable spans of 8-9.6m
  • Height of gutter - 4m, 4.5 or 5m
  • Total height - 6-6.5m
  • Reinforced for trellising load of 25 Kg/m².


Ventilation Specifications

  • Width of roof vent - 2.6m
  • Height of opening - 1.10m
  • Ventilation rate of the total greenhouse area: 12% in the single roof vent type and 24% in the double vent type.
  • Roof vent may not surpass the maximum top height to prevent water swelling in the coverings due to heavy rains.
  • Roof vent is electrically operated by gear motors and a rack and pinion operation system.


Choose a Top Max Greenhouse when:

  • Extreme cold weather
  • Snow is common
  • Winds are high

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