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Grandio Summit 12x12 Greenhouse - Premium Kit

Grandio Summit Greenhouse

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  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse
  • Grandio Summit Greenhouse 12x12
  • Grandio Summit Greenhouse 12x12

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Availability: On Backorder Until Mid-August


$600 Off Normal Pricing!

On Backorder Until Mid-August

  • - 10mm Twin-Wall Panels -
  • - (6) Roof Windows -
  • - Rain Gutters -
  • - Drain Kit -
  • - Extreme Snow Load Kit -
  • - Flat Mount Anchor Kit -
  • - (6) Auto Roof Window Openers -
  • - (1) Pack of 10 Plant Hangers -
  • - (1) 8 oz. Brillianize Cleaner -
  • - (1) Trellis Kit -
  • - (1) Drip Kit -

Shipping: Ships Free Financing: Bill Me Later
Delivery Estimate: 5-10 Days Price Guarantee: 110% Price Match
Return Policy: 30 Days Money Back

Need help call (866) 928-3150

We will match any price plus 10% of the difference

Quick Overview

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

Engineered to perform in harsh environments, the Grandio Summit's rugged durability makes it one of the most insulated greenhouses on the market. Its barn shape design is both elegant and functional, allowing plenty of growing space while looking great in your yard.

Made to meet the highest standards of hobby and professional gardeners alike, the 1.6mm profile aluminum frame provides a stronger and more durable build than its competitors.

The Summit’s range of features and accessories provides a well ventilated growing space with ample roof windows and re-engineered sliding double doors. The UV-protected 10mm paneling has an (R) value of 1.89* and heat loss (U) value of 0.53, allowing for optimal insulation in all climates.

The doors are hung from above which eliminates jamming and the door wheels are made from high-quality nylon for durability. The door wheel bolt is turned from solid brass with a smooth shank to reduce wear. The doors come standard with heavy-duty lockable door handles and included key.

Carefully engineered to the highest standards, gardeners of all types will love the combination of strength, quality, performance, and value that Grandio Greenhouses are known for.

Reach the Summit with Grandio!


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.
  • Wind Rating: Withstands winds up to 76 mph.
  • Snow Rating: Maximum snow load of 25lbs./ft² of snow.
  • 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: (6) roof vents with adjustable manual openers/latches


Product Title Grandio Summit 12x12 Greenhouse - Premium Kit
Brand No
Model Summit
Color Green
Frame Powder Coated Reinforced Aluminum Frame
Panels 10mm twin-wall polycarbonate
Product Dimensions 144" W x 144" L x 114.25" H
Warranty Lifetime frame, 10 year panels
Size 12' x 12'
Weight (in lbs) N/A
Condition new
Supplier SKU No
Shipping Promo No


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