GrowSpan Gothic Premium High Tunnels, with 6'H sidewalls, sufficiently modify the environment to enhance crop growth, quality and yield. These high tunnels offer temperature control, protection from wind, rain, disease and predators.

• Frames are constructed with our 14-gauge, USA-made, triple-galvanized structural steel tubing. 20'W and 26'W tunnels use 1.66" OD pipe. 30'W tunnels use 1.90" OD pipe.
• Available with either our superior PolyMax® 5.2 oz., 12 mil thick Clear Woven Greenhouse Covering or our Sun Master® 6 mil 4 year Clear Greenhouse Film.
• Our PolyMax® 5.2 oz.,12 mil Clear Woven Greenhouse Covering comes with a 4 year warranty. With added UV inhibitors, this cover offers 85% light transmission, has excellent cold-crack resistance and will not tear.
• Our Sun Master® 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, offers 92% light transmission and comes with a 4 year warranty.
• Choose Roll-Up or Drop-Down Sides, manufactured from our 5.2 oz. fabric, to control the air entering the high tunnel and provide four-sided ventilation. Includes our exclusive "Twist-of-the-Wrist" Assembly, complete with all necessary hardware for installation.
• Roll-up doors, which utilize our Hand-Crank Assembly, and end panels are manufactured from 10 oz., 22 mil translucent fabric.
• 20'W units have 16'W x 10'H doors. 26'W and 30'W units have 20'W x 10'H doors.
• Purchase 4 x 4s locally to strengthen and finish off the ends.
• 4' rafter spacing.
• For additional strength and durability, particularly in heavy-snow areas, add our GrowSpan Gothic High Tunnel Support Kits or our Gothic High Tunnel Rafter Kits.
• 6' sidewalls provide additional, valuable growing space.
• Heavy Duty ground posts are included.
• Baseboards are required to attach Drop-Down Sides. Our galvanized steel baseboards, sold separately, are ideal.
• The optional Flush Door Mounting Kit (115083) provides an ideal entryway for high tunnels that are 30'W and have Roll-Up Ends. The kit features a 36"W x 80"H polycarbonate door for optimum light transmission. Flange provides a tight seal, ensuring control over the high tunnel's environment.