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Grandio Greenhouses

Grandio Element 6x12 Greenhouse Kit

SKU ELEMENT-612-WOOD
$2,299.00
$2,299.00

Estimated shipping time

You can typically expect your items to arrive within 4–7 business days, depending on your location and product availability.

What is your Return Policy?

At Northgrid Supply, we want every customer to shop with confidence. If something doesn’t go as planned, we’ve made returns and refunds simple and fair. Here’s how it works:

1. Return Window

You can request a return within 30 days of receiving your order. Unfortunately, we’re unable to accept returns after that time frame.

2. Who Pays for Return Shipping?

  • If your item arrives damaged, defective, or incorrect, we’ll cover the return shipping cost.
  • If you’re returning an item because you changed your mind, you’ll be responsible for return shipping fees.

3. Damaged or Defective Items

Received something broken or not working properly? Contact us within 30 days. We’ll provide a prepaid return label and once the item is returned and inspected, we’ll issue either a full refund or a replacement—including any original shipping costs.

4. Changed Your Mind?

If you no longer want the item, you can return it within 30 days—as long as it's unused, in its original packaging, and in resellable condition. You’ll need to handle the return shipping, and once we receive and inspect it, we’ll refund the product cost (excluding shipping).

5. Refund Processing

Once we receive and approve your return, we’ll send a confirmation email and issue a refund to your original payment method within 7 business days. Please allow additional time for banks or credit card companies to process and reflect the refund.

If it’s been over 10 business days since your refund was approved and you still don’t see it, contact us at support@northgridsupply.com and we’ll look into it immediately.

6. Restocking Fees

Change-of-mind returns are subject to a 25% restocking fee. Damaged, defective, or incorrect items are not charged a restocking fee.

This greenhouse kit provides 72 square feet of enclosed growing space within a 6-foot-wide by 12-foot-long footprint. Its extended interior is designed for gardeners who need room for vegetables, herbs, flowers, seedlings, large plants, multiple shelving runs, or separate growing areas.

The structure combines a heavy-duty powder-coated aluminum frame with insulated twin-wall polycarbonate panels. Three roof vents distribute passive ventilation along the 12-foot length, while built-in rain gutters help manage rainwater.

Extra-tall double sliding doors provide access for people, wheelbarrows, and large containers. Pre-cut panels, labeled components, stainless steel hardware, basic tools, and step-by-step instructions support DIY assembly.

Select Add Premium Upgrade to receive the following additional items:

  • 3 Roof Vent Auto Openers
  • 10 Plant Hangers
  • 1 Brillianize Anti-Static Panel Cleaner
  • 1 Trellising Kit
  • 1 Drip Irrigation Kit
  • Premium Upgrade Price: $429.00

Key Features

  • 72-Square-Foot Growing Area: The 6-foot-wide by 12-foot-long footprint provides substantial room for plants, shelving, staging, and comfortable movement inside the greenhouse.
  • Extended Interior: The 12-foot length accommodates multiple growing areas or shelving runs while retaining a 6-foot width.
  • Heavy-Duty Frame: The rust-proof and corrosion-resistant powder-coated aluminum frame is designed for outdoor greenhouse use.
  • Insulated Panels: Twin-wall polycarbonate panels provide insulation and UV diffusion for year-round growing applications.
  • Three Roof Vents: Three included roof vents distribute passive ventilation along the extended interior to help regulate temperature and humidity.
  • Double Sliding Doors: Extra-tall, bind-resistant double sliding doors provide convenient access for people, wheelbarrows, and large planting containers.
  • Easy-Latch Closure: The doors use an easy latch with a double ball catch.
  • Built-In Rain Gutters: Integrated gutters help collect and direct rainwater.
  • Weather Ratings: The greenhouse is rated for winds up to 76 mph when properly anchored and a maximum snow load of 25 pounds per square foot.
  • DIY Assembly: Pre-cut and labeled components, necessary hardware, basic tools, and step-by-step instructions support assembly without professional installation.
  • Selectable Anchoring: Wood, Concrete, and Dirt anchor options accommodate different installation surfaces.
  • Fixed-Length Configuration: This 12-foot greenhouse is not extendable.
  • Optional Premium Upgrade: The selectable upgrade includes three roof vent auto openers, 10 plant hangers, one anti-static panel cleaner, one trellising kit, and one drip irrigation kit.

Specifications

  • Growing Area: 72 square feet
  • Overall Height: 7 feet 1 inch
  • Overall Width: 6 feet
  • Overall Length: 12 feet
  • Frame: Approximately 0.047-inch heavy-duty aluminum
  • Frame Color: Powder-coated green
  • Panel Construction: Twin-wall polycarbonate
  • Panel Thickness: Approximately 0.39 inch
  • Door Type: Bind-resistant double sliding door
  • Door Dimensions: 2 feet 3.25 inches × 5 feet 10 inches
  • Latch: Easy latch with double ball catch
  • Number of Roof Vents: 3
  • Rain Gutters: Built-in
  • Steel Base Kit: Sold separately
  • Snow Load Kit: Sold separately
  • Optional Back Door Kit: No
  • Extendable: No
  • Anchor Options: Wood, Concrete, Dirt
  • Snow Rating: Maximum snow load of 25 pounds per square foot
  • Wind Rating: Up to 76 mph when properly anchored

Size Guide

  • Greenhouse Footprint: 6 feet wide × 12 feet long
  • Growing Area: 72 square feet
  • Ground-Installation Roof Peak Height: 88¾ inches
  • Ground-Installation Eave Height: 60 inches
  • Ground-Installation Base Width: 74 inches
  • Ground-Installation Base Length: 143¾ inches
  • Ground-Installation Base Height: 3¼ inches
  • Interior Door Opening: 27¼ inches wide × 69 inches high

Compatibility

  • Compatible With: Wood decks, wooden platforms, timber bases, pavement, concrete slabs, other hard surfaces, and dirt or earth when installed with the required steel base kit and appropriate anchoring solution.
  • Not Compatible With: Extension kits or an optional back door kit.

Included

  • Powder-coated aluminum frame
  • Twin-wall polycarbonate panels
  • Bind-resistant double sliding door
  • Easy latch with double ball catch
  • Three roof vents
  • Built-in rain gutters
  • Stainless steel hardware
  • Basic assembly tools
  • Pre-cut panels
  • Labeled components
  • Step-by-step assembly instructions
  • Selected initial anchoring kit

Foundation & Anchoring Solutions

  • Wood Anchor: Intended for decks, wooden platforms, and timber bases. The required Wood Anchoring Kit securely fastens the greenhouse to the wood foundation for stability and wind resistance.
  • Concrete Anchor: Intended for pavement, concrete slabs, and other hard surfaces. The required Concrete Anchoring Kit securely fastens the greenhouse to the hard surface for stability and wind resistance.
  • Dirt Anchor: Intended for dirt or earth installations. The steel base kit is required and provides a heavy-duty, powder-coated steel perimeter base for additional stability and rigidity. The Dirt option adds the base kit for $449.

Warranty: Lifetime warranty on the aluminum frame and 15-year warranty on the polycarbonate panels.

Product Support 

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    Total price$2,299.00