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Grandio Summit 12x8 Greenhouse

Grandio Summit Greenhouse

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  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse 12x8
  • Grandio Summit Greenhouse 12x8

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Availability: In stock

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Return Policy: 30 Days Money Back

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Quick Overview

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.

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.

*R-Value - the measurement of 'insulating ability' of the material. Higher R-Value refers to higher insulation value.

*U-Value - the measurement of 'heat loss' through the material. The lower the U-Value the less heat is escaping.


At 9.5 feet tall and 12 feet wide, it's easy to see why it's called the Summit. The newest Grandio greenhouse is bigger in every way than it's predecessors and is perfect for those with big backyards and lots of planting to do.

  • Frame: Heavy duty aluminum
  • Color: Powder coated green
  • Panels: 10mm twin-wall UV protected polycarbonate.
  • Door Width: 41" W x 85" H
  • Doors: Bind-resistant sliding double-doors.
  • Latch: Magnetic latch doors with key lock
  • Tools: Included
  • Expandable: Easily add extensions in the future
  • Hardware: Stainless steel nuts and bolts
  • Reinforcement: Cross-roof truss and cross corner bracing
  • Gutters: Built-in rain gutters
  • Ventilation: (4) roof vents with adjustable manual openers/latches


Product Title Grandio Summit 12x8 Greenhouse
Model Summit
Color Green
Frame Powder Coated Reinforced Aluminum Frame
Panels 10mm twin-wall polycarbonate
Product Dimensions 144" W x 97.25" L x 114.25" H
Warranty Lifetime frame, 10 year panels
Size 12' x 8'
Condition new
Supplier SKU No
Shipping Promo No


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