GrowSpan Round Cold Frames

GrowSpan cold frames, also known as hoop buildings, are ideal for starting seedlings or transitioning greenhouse plants prior to outdoor planting.

  • Easy to assemble; no drilling or welding.
  • 4' rafter spacing.
  • Heavy gauge USA-made, triple-galvanized structural steel tubing.
  • Ground posts and purlins on all models.
  • Round style hoop building frame.
  • Baseboard is recommended. Our recycled plastic lumber, sold separately, is ideal.
  • Greenhouse film is sold separately.