42 Products
Greenhouse and Tunnel Supplies
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Greenhouse and Tunnel Supplies

Planning Tools & Calculators | Interactive Apps & Spreadsheets from Johnny's
42 Products
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High Tunnel Vent w/ Auto Opener – 18" x 18" Vents and Vent Openers Quick Shop

High Tunnel Vent w/ Auto Opener – 18" x 18"

Provides additional greenhouse ventilation in hot conditions.
Sale
High Tunnel Vent w/ Auto Opener – 12" x 12" Vents and Vent Openers Quick Shop

High Tunnel Vent w/ Auto Opener – 12" x 12"

Provides additional greenhouse ventilation in hot conditions.
Sale
Tufflite IV™ – 28' x 125' Tufflite™ Quick Shop

Tufflite IV™ – 28' x 125'
Greenhouse Film

28-feet wide x 125-feet long
Sale
Tufflite IV™ – 20' x 65' Tufflite™ Quick Shop

Tufflite IV™ – 20' x 65'
Greenhouse Film

20-feet wide x 65-feet long
Sale
Univent Automatic Opener Vents and Vent Openers Quick Shop

Univent Automatic Opener
Developed by Johnny's

Keep your cold frame plants in their "comfort zone."
Sale
Tufflite IV™ – 24' x 65' Tufflite™ Quick Shop

Tufflite IV™ – 24' x 65'
Greenhouse Film

24-feet wide x 65-feet long
Sale
Univent Automatic Vent and Window Opener Vents and Vent Openers Quick Shop

Univent Automatic Vent and Window Opener

Universal, for greenhouse and cold frame applications.
Sale
Tufflite IV™ – 32' x 100' Tufflite™ Quick Shop

Tufflite IV™ – 32' x 100'
Greenhouse Film

32-feet wide x 100-feet long
Sale
Tufflite IV™ – 28' x 100' Tufflite™ Quick Shop

Tufflite IV™ – 28' x 100'
Greenhouse Film

28-feet wide x 100-feet long
Sale
High Tunnel Vent w/ Auto Opener – 24" x 24" Vents and Vent Openers Quick Shop

High Tunnel Vent w/ Auto Opener – 24" x 24"

Provides additional greenhouse ventilation in hot conditions.
Sale
Tufflite IV™ – 28' x 65' Tufflite™ Quick Shop

Tufflite IV™ – 28' x 65'
Greenhouse Film

28-feet wide x 65-feet long
Sale
Tufflite IV™ – 20' x 125' Tufflite™ Quick Shop

Tufflite IV™ – 20' x 125'
Greenhouse Film

20-feet wide x 125-feet long
Sale
Tufflite IV™ – 24' x 125' Tufflite™ Quick Shop

Tufflite IV™ – 24' x 125'
Greenhouse Film

24-feet wide x 125-feet long
Truss Support Kit High Tunnel Kits Quick Shop

Truss Support Kit
Bobcat High Tunnel Kit Accessory

Doubles the strength of the greenhouse.
Sliding Door Kit High Tunnel Kits Quick Shop

Sliding Door Kit
Bobcat High Tunnel Kit Accessory

Easy tunnel access, even in snow.
Steel End Wall Kit High Tunnel Kits Quick Shop

Steel End Wall Kit
Bobcat High Tunnel Kit Accessory

Permanent solution for end walls — no need to replace wood!
Sale
Sidewall Hand Crank Hardware & Accessories Quick Shop

Sidewall Hand Crank

Quickly adjust tunnel sidewalls and hold them at desired height.
Sale
Hoop Bender Hitch Mount Benders Quick Shop

Hoop Bender Hitch Mount
Quick Hoops™ Accessory
Developed by Johnny's

Ultimate portability for your low tunnel benders.
Sale
Gothic Tunnel Peak Jig Benders Quick Shop

Gothic Tunnel Peak Jig
Quick Hoops™ Accessory
Developed by Johnny's

Bend gothic arch-shaped bows to shed snow more efficiently.
Sale
Snap Clamps for 1/2" EMT Hardware & Accessories Quick Shop

Snap Clamps for 1/2" EMT

Quickly fasten row covers to low tunnels.
Sale
Snap Clamps for 3/4" EMT or 1/2" PVC Hardware & Accessories Quick Shop

Snap Clamps for 3/4" EMT or 1/2" PVC

Quickly fasten row covers to low tunnels.
Sale
Snap Clamps for 3/4" PVC or 1" EMT Hardware & Accessories Quick Shop

Snap Clamps for 3/4" PVC or 1" EMT

Quickly fasten row covers to low tunnels.
Sale
Poly Patch Repair Tape – 4" Hardware & Accessories Quick Shop

Poly Patch Repair Tape – 4"

For everything from small patch jobs to splicing large sheets together.
Sale
Snap Clamps for 1" PVC or Chain Link Fence Top Rail Hardware & Accessories Quick Shop

Snap Clamps for 1" PVC or Chain Link Fence Top Rail

Quickly fasten row covers to low tunnels.
Sale
Poly Patch Repair Tape – 6" Hardware & Accessories Quick Shop

Poly Patch Repair Tape – 6"

For everything from small patch jobs to splicing large sheets together.
Sale
Cross Connectors – 2 Count Hardware & Accessories Quick Shop

Cross Connectors – 2 Count

Save time, money and make structures stronger.
Sale
Brace Band, 1 3/8" – 20 Count Hardware & Accessories Quick Shop

Brace Band, 1 3/8" – 20 Count

For securing the ends of collar ties and angle braces to bows.
Sale
End Rail Clamp, 1 3/8" – 10 Count Hardware & Accessories Quick Shop

End Rail Clamp, 1 3/8" – 10 Count

A very versatile piece of greenhouse hardware.
Poly Latch Channel – 8' Hardware & Accessories Quick Shop

Poly Latch Channel – 8'

Convenient system for securing high tunnel coverings.
Out Of Stock
Poly Latch Wire – 4' Hardware & Accessories Quick Shop

Poly Latch Wire – 4'

Convenient system for securing high tunnel coverings.
Out Of Stock