Growers Supply

Model Series 500 - Extra-Tall High Tunnels - 20`W

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Series 500 Extra-Tall High Tunnels offer superior ventilation and maximum usable growing space due to their increased sidewall height. Start growing earlier and grow late into the fall with a Series 500 Tall High Tunnel! Experience larger, healthier yields due to the maximum usable space!

  • Premium 2.375' OD, 16-gauge, galvanized steel frame ensures strength, durability and long life.
  • Series 500 Tall High Tunnels have two cover options. Choose from our Sun Master® 6 mil 4 year Clear Greenhouse Film or our superior 5.2 oz., 12 mil thick PolyMax® Clear Woven Greenhouse Covering.
  • Our Sun Master® 6 mil 4 year Clear Greenhouse Film is made from strong copolymer resin, with tri-layer construction and UV additives. Film offers 92% light transmission and comes with a 4 year warranty.
  • Our PolyMax® 5.2 oz., 12 mil Clear Woven Greenhouse Covering, with added UV inhibitors, is superior to all greenhouse fabrics, offers 85% light transmission and comes with a 4 year warranty.
  • Choose between Roll-Up and Drop-Down Side options that will allow you to better control the ventilation within the hoop house. Drop-Down Sides allow you to control the air entering the high tunnel, without exposing your plants to cold drafts. Both options include our exclusive 'Twist-of-the-Wrist' Assembly that comes complete with all necessary hardware.
  • Roll-Up Sides are made of our 6 mil 4 year Greenhouse Film. Drop-Down Sides are manufactured from our 5.2 oz. Clear Greenhouse Fabric.
  • Series 500 Tall High Tunnels have three rows of 1.315' OD 17-gauge purlins, which are ideal for hanging baskets in nurseries, garden centers and more.
  • Rafter spacing: 6' Sidewall height: 6'.
  • 20'W high tunnels are 15'-10'H.
  • Heavy-duty ground posts are included with your high tunnel. Ground posts are made of 2.197' OD 9-gauge steel and provide exceptional support. Optional post driver (112848) sold separately.
  • Baseboards are recommended. Our Recycled Plastic Lumber, sold separately, comes with a 50 year warranty and is ideal.
  • Optional End Frame Kits, Doors, Ridge Vent Kits, Roll-Up Ends and Support Packages are sold separately.

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