Grandio Elite Greenhouse 8×20
Grandio Elite 8×20 Greenhouse – Spacious, Durable, and Built for All-Season Gardening
The Grandio Elite 8×20 Greenhouse is a premium barn-style greenhouse designed for serious gardeners and professionals who need ample space, superior insulation, and unmatched durability. Featuring a heavy-duty aluminum frame and 10mm twin-wall polycarbonate panels, this greenhouse ensures optimal heat retention, weather resistance, and long-term performance, making it one of the most reliable greenhouses on the market.
The barn-style design isn’t just visually appealing—it maximizes vertical space, allowing for more plant growth, efficient ventilation, and enhanced light diffusion for healthier plants.
Engineered for Strength & Insulation
✔ Heavy-duty 1.6mm aluminum frame – Stronger and more durable than PVC-based greenhouses
✔ 10mm twin-wall polycarbonate panels – Superior insulation for winter gardening
✔ Elegant barn-style structure – Expands vertical growing space while diffusing light evenly
✔ Gliding double doors – Overhead hanging system prevents jamming for smooth operation
✔ Durable nylon door wheels – Solid brass bolt for long-lasting performance
✔ Insulation R-VALUE of 1.89 and heat loss U-VALUE of 0.53 – Energy-efficient and cost-effective
Unlike other greenhouse models that warp, crack, or deteriorate over time, the Grandio Elite 8×20 is crafted for durability, ensuring a stable and insulated growing environment in harsh weather conditions.
Maximize Your Growing Potential
The Grandio Elite 8×20 Greenhouse offers a generous growing space and is packed with features that create an ideal environment for plant growth:
🔹 Expansive 8×20 Layout – Perfect for large-scale gardening, from vegetables to exotic plants
🔹 Optimized Ventilation – Promotes airflow for plant health and temperature regulation
🔹 Effortless Assembly – User-friendly design for a smooth setup process
With its robust materials, outstanding insulation, and extra-large interior, the Grandio Elite 8×20 Greenhouse is the perfect solution for gardeners who want to cultivate plants all year round in any climate.
🌿 Order yours today and take your gardening to the next level! 🌱🏡
Premium Kit Includes:
- 10mm Twin-Wall Panels
- (5) Roof Windows
- Base Kit
- Rain Gutters
- Snow Load Kit
- (5) Auto Roof Vent Openers
- (2) Pack of 10 Plant Hangers
- (1) Trellis Kit
- (1) Drip Kit
- (1) 8 oz. Brillianize Cleaner
Basic Kit Includes:
- 10mm Twin-Wall Panels
- (5) Roof Windows
- Base Kit
- Rain Gutters
- Snow Load Kit
Actual Size: 8’2″ W x 19’11” L x 8′ H
Specifications
- Height: 8′
- Width: 8′ 2″
- Length: 19′ 11″
- Frame: Heavy duty aluminum
- Wind Rating: Withstands winds up to 76 mph*
- Snow Rating: Maximum snow load of 25lbs./ft² of snow*
- Color: Powder coated green
- Panels: 10mm twin-wall UV protected polycarbonate.
- Door Width: 44″
- Doors: Bind-resistant sliding double-doors.
- Latch: Easy-latch doors with double-ball catch
- Tools: Included
- Hardware: Stainless steel nuts and bolts
- Reinforcement: Cross-roof truss and cross corner bracing
- Gutters: Built-in rain gutters
- Ventilation: (5) roof vents with adjustable manual openers/latches
Assembly
This is your resource for finding complete assembly instructions for all Grandio Elite Greenhouses. You can download the instructions in PDF format or you can view the assembly video. We’ve provided everything you need to get started with your new Grandio greenhouse. Have questions? Give us a call 1-866-448-8231.
» Download: Grandio Elite 8×20 Manual
Note: In order to read the manuals, you need the Adobe Acrobat PDF reade
Q&A
You have questions, no problem, we have answers.
How easy is the Grandio to assemble? Very easy. We’ve designed and perfected the assembly process with you in mind. We provide the tools and a step-by-step assembly manual and video and if you have any problems you can call us at 1-844 873-5764.
Is a building permit required? You may not need a permit for your Grandio, but it is always a good idea check before you get started. We recommend you check local ordinances and requirements before setting up your greenhouse.
Is it strong enough for windy or heavy snow locations? Definitely. Grandio’s are all designed to withstand the most hostile environments with a wind rating of 76 MPH and snow load rating of 25lbs./ft² of snow. We offer additional roof and eave supports to increase the strength and durability of the greenhouse frame for the Element Greenhouses. Just follow the included directions for securing your greenhouse and you’ll enjoy many years of growing with your Grandio.
I live in the hot southwest will Grandio Greenhouses work for me? For people who live in high temperature areas of the country like Arizona, Texas, California, Nevada, or New Mexico we recommend our aluminum shade net. The aluminum shade net reflects the sun on the hottest days to help your greenhouse keep it’s cool.
How do the automatic roof vent openers work? The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling. No electricity needed!
How large is the roof vent opening? The vent opening is 18-3/4″ width by 22-3/4” length.
What is the difference in polycarbonate thicknesses? Polycarbonate is available in several different thicknesses and normally comes in single, double, and triple walled sheets that can vary in thickness from 1mm to 10mm. A good rule to remember is that the thicker the panel the better insulation you’ll have for your greenhouse.
Can these greenhouse be mounted to a concrete pad? The Grandio comes standard with a base that is meant to anchor it in the soil with concrete footers or a duckbill anchor kit. However, it can be mounted to a concrete pad with additional tools and hardware. For more information please refer to our online manual or give us a call 1-844 873-5764 to discuss options.