Growers Supply


GrowSpan Round Premium Extra Tall High Tunnels

42'W GrowSpan Round Premium Extra Tall High Tunnels, also known as hoop buildings, provide more space for growing and tending your crops. Extend your growing season! Let a High Tunnel enhance growth, yield and quality! Outgrow your competition. Grow all year long!

  • Constructed from 14 gauge, 1.90" OD USA-made, triple-galvanized structural steel tubing.
  • Vertical, 1.90" OD center row supports add strength and durability.
  • Sidewall height: 4'. Ridge height: 15'.
  • Cover is single layer, 6 mil 4 year greenhouse film.
  • Easy to ventilate with our exclusive "Twist-of-the-Wrist" Roll-Up Curtain Assembly.
  • Ends are manufactured from 10 oz., 22 mil translucent fabric with 4 zippers now feature our heavy-duty, industrial-strength #15 Big Zip Zippers.
  • Ground posts and two rows of 1.315" OD purlins are included.
  • Top and bottom baseboards are recommended. Our Recycled Plastic Lumber, sold separately, comes with a 50 year warranty and is ideal.