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GrowSpan Round Pro Greenhouses - 20' to 38'W

GrowSpan Round Pro Greenhouses are energy efficient, economical and ideal for the professional grower or backyard hobbyist. Choose either the greenhouse alone or save hundreds of dollars and purchase the entire Greenhouse System. You get exactly the equipment you need for your size greenhouse.

• Frame is constructed from highest quality USA-made, triple-galvanized structural steel tubing.
• End frame is constructed from strong 16 gauge, 1.5" square USA-made, triple-galvanized structural steel tubing.
• Round style has polycarbonate ends and greenhouse film top covering.
• Available as stand-alone greenhouses or complete greenhouse systems.
• 8mm twin-wall polycarbonate provides superior insulating qualities, offers reduced heating costs and comes with a 10 year warranty.
• Double layer 6 mil 4 year greenhouse film, with Inflation Fan Kit, allows for superior heat retention. Poly latches are included.
• "Twist-of-the-Wrist" roll-up sides make ventilation easy.
• Heavy-duty double doors are 48"W x 92"H each and come complete with stainless steel hinges and latch. Optional second door kit is also available.
• Heavy-duty ground posts are included with 20'W and 26'W units.
• Heavy-duty base plates, that can be used on any surface and come with pre-drilled fastening holes, are included with 38'W units.
• During extreme heat, we recommend our SunBlocker™ 60% Black Knitted Shade Panels, sold separately, to eliminate heat stress and to ensure optimum plant growth. Contact us for details.