Growers Supply

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GrowSpan Round Pro Greenhouses and Systems

GrowSpan Pro Greenhouses offer you more valuable growing space. Purchase the greenhouse alone or save hundreds of dollars and purchase the entire GrowSpan Pro Greenhouse System.

  • Frame is manufactured from highest quality USA-made, triple-galvanized structural steel tubing, with 4' rafter spacing.
  • GrowSpan Round Pro Greenhouses the 1.315" OD with 17-gauge triple-galvanized structural steel tubing.
  • GrowSpan Gothic Pro Greenhouses the 1.66" OD with 14-gauge triple-galvanized structural steel tubing.
  • End frame is constructed from strong 16-gauge, 1.5" square USA-made, triple-galvanized structural steel tubing.
  • Ends are covered with 8 mm twin-wall polycarbonate that offers superior insulating qualities and reduced heating costs and comes with a 10 year warranty.
  • Heavy-duty ground posts are included.
  • We do recommend using a baseboard. Our Recycled Plastic Lumber sold separately, comes with a 50 year warranty and is ideal.
  • Double-layer top covering, with Inflation Fan Kit, is manufactured using an outer layer of our Sun Master® 6 mil, 4 year Greenhouse Film and an inside layer of our Sun Master® Infrared Anti-Condensate Thermal Film that maximizes heat retention and offers excellent drip control.
  • Units come equipped with a 36"W x 80"H heavy-duty, aluminum entry door, complete with 6 mm polycarbonate sections at both top and bottom, stainless steel hinges and latch.
  • Optional Single Door Kit, sold separately.
  • During extreme heat, use our SunBlocker™ Black Knitted 60% Shade Panels, sold separately, to eliminate heat stress and to ensure optimum plant growth.