Grandio Summit Greenhouses


This beautiful barn-style greenhouse gives you a year-round growing space in an attractive, heavy duty aluminum frame and 10mm twin-wall panels.

Engineered to perform in harsh environments. The Grandio Summit's rugged durability, makes it the most insulated of the greenhouses on the market and it's barn shape design is both elegant and functional, and allows plenty of growing space.

grandio summit greenhouse 12x8
Grandio Summit Greenhouse 12x8
  • Sale Price: $2,999.00

  • Regular Price $3,500.00
  • Model: SUMMIT-128
  • Dimensions:
    • Width: 12'
    • Depth: 8.1'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (4) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x12
Grandio Summit Greenhouse 12x12
  • Sale Price: $3,899.00

  • Regular Price $4,500.00
  • Model: SUMMIT-1212
  • Dimensions:
    • Width: 12'
    • Depth: 12'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (6) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x16
Grandio Summit Greenhouse 12x16
  • Sale Price: $4,799.00

  • Regular Price $5,500.00
  • Model: SUMMIT-1216
  • Dimensions:
    • Width: 12'
    • Depth: 15.89'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (8) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x20
Grandio Summit Greenhouse 12x20
  • Sale Price: $5,699.00

  • Regular Price $6,500.00
  • Model: SUMMIT-1220
  • Dimensions:
    • Width: 12'
    • Depth: 19.78'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (10) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x24
Grandio Summit Greenhouse 12x24
  • Sale Price: $6,599.00

  • Regular Price $7,500.00
  • Model: SUMMIT-1224
  • Dimensions:
    • Width: 12'
    • Depth: 23.68'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (12) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x28
Grandio Summit Greenhouse 12x28
  • Sale Price: $7,499.00

  • Regular Price $8,500.00
  • Model: SUMMIT-1228
  • Dimensions:
    • Width: 12'
    • Depth: 28'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (14) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
grandio summit greenhouse 12x32
Grandio Summit Greenhouse 12x32
  • Sale Price: $8,399.00

  • Regular Price $9,500.00
  • Model: SUMMIT-1232
  • Dimensions:
    • Width: 12'
    • Depth: 32'
    • Height: 9.25'
  • Includes:
  • 10mm Twin-Wall Panels
  • (16) Roof Windows
  • Rain Gutters
  • Drain Kit
  • Extreme Snow Load Kit
  • Flat Mount Anchor Kit
  • Moisture Control Kit

Please select an anchoring kit option.

*

Availability: In stock and ready to ship
Features

Made to meet the highest standards of amateur and professional gardeners, the 1.6mm profile aluminum frame provides a stronger and more durable build than its competitors and won't warp, melt, or crack like the PVC-based barn-style greenhouses. And the heavy-duty construction coupled with 10mm twin-wall polycarbonate panels provide and the perfect thickness for winter insulation.

A wide range of features and accessories culminates in a well ventilated growing space with gliding double doors, our superb easy-to-assemble system, and an insulation (R) value of 1.89* and heat loss (U) value of 0.53 resulting in an amazing gardening and greenhouse experience.

The doors are hung from above which eliminates jamming and the door wheels are made from nylon for durability. The door wheel bolt is turned from solid brass with a smooth shank to reduce wear on the wheels.

The doors come standard with a magnetic catch with heavy duty lockable door handles and included key.

Carefully designed, engineered, and built to the highest quality standards. Gardeners of all types will love the combination of strength, quality, features and especially the terrific value the Grandio Greenhouse offers.

  • Frame: Heavy duty aluminum.
  • Color: Powder coated green.
  • Panels: 10mm twin-wall UV protected polycarbonate.
  • Door Size: 41.5" W x 85" H
  • Doors: Bind-resistant sliding double-doors.
  • Latch: Magnetic latch doors with key lock.
  • Reinforcement: Cross-roof truss and cross corner bracing.
  • Tools: Included
  • Hardware: Stainless steel nuts and bolts.
  • Gutters: Built-in rain gutters.
  • Ventilation: (4) roof vent with adjustable manual openers/latches.
  • Frame Warranty: Lifetime
  • Panel Warranty: 10 years