Gro-Max Gothic High Tunnels

Gro-Max Gothic High Tunnels sufficiently modify the environment to enhance crop growth, quality and yield. Ideal for a wide variety of crops, these high tunnels offer temperature control and protection from wind, rain, disease and predators.

• Available with either our superior PolyMax® 5.2 oz., 12 mil thick Clear Woven Greenhouse Covering or our Klerk's K50 6 mil 4 year Greenhouse Film.
• Frames are constructed with our 14 gauge Allied Gatorshield® structural steel tubing. 20'W and 26'W tunnels use 1.66" OD pipe. 30'W tunnels use 1.90" OD pipe.
• Unique cross bracing at the top for added strength and durability.
• Our 5.2 oz. 12 mil clear greenhouse covering comes with a full 4 year warranty. With added UV inhibitors, this cover has excellent coldcrack resistance and will not tear.
• Our Klerk's K50 6 mil 4 year clear film is made from strong copolymer resin with an anti-static additive that repels dust and dirt and keeps the light shining through. This film, with tri-layer construction and UV additives, comes with a 4 year warranty.
• Drop-Down Sides, manufactured from our 5.2 oz. fabric, allow you to control the air entering the high tunnel without exposing young plants to cold drafts. Includes our exclusive "Twist-of-the-Wrist" Assembly,complete with all necessary hardware for installation.
• Optional Ridge Vent Kit, available only on units with 5.2 oz. clear greenhouse cover, allows control over ventilation and temperatures within the high tunnel during the hot summer months.
• Roll-up doors and end panels are manufactured from 10 oz., 22 mil translucent fabric.
• 4' rafter spacing.
• 4'5" sidewalls provide additional, valuable growing space.
• Gain additional space by adding one of our Rafter Kits to your Gro-Max High Tunnel. Also ideal for added strength and durability in heavy snow areas.
• Purchase 4 x 4s locally to strengthen and finish off the ends.
• Heavy-duty ground posts are included.
• Baseboards are required to attach Drop-Down Sides. Our Recycled Plastic Lumber, sold separately, comes with a 50 yr. warranty and is ideal.