Grandio Ascent Greenhouse 8x20
Grandio Ascent 8×20 Greenhouse – The Ultimate Growing Space
This is the greenhouse you’ve been waiting for—now standing at an impressive 8 feet tall with an expansive 8×20 footprint, perfect for serious gardeners and commercial growers alike.
The Grandio Ascent 8×20 Greenhouse is engineered for rugged reliability and superior insulation, making it one of the best-performing greenhouses on the market. With accolades from gardening experts and enthusiasts worldwide, this model provides a low-maintenance, high-durability solution for year-round growing.
Built for Strength & Insulation
✔ Heavy-duty 1.6mm aluminum frame – Stronger and more durable than competitors
✔ 6mm twin-wall polycarbonate panels – Outstanding insulation for winter protection
✔ Spacious 8×20 layout – Ideal for growing a wide variety of plants and vegetables
✔ Gliding double doors – Overhead hanging system prevents jamming
✔ Durable nylon door wheels – Ensures smooth, long-lasting operation
✔ Estimated insulation R-VALUE of 1.54 and heat loss U-VALUE of 0.65
With its reinforced frame and weather-resistant materials, this greenhouse can withstand extreme climates, providing optimal growing conditions in any season.
Designed for Effortless Gardening
The Grandio Ascent 8×20 Greenhouse is designed with convenience and efficiency in mind:
🔹 Well-Ventilated Growing Space – Maximizes airflow for healthier plants
🔹 Easy-to-Assemble System – Thoughtfully designed for quick and hassle-free setup
🔹 Smooth Double Doors – Overhead sliding mechanism for effortless access
With its spacious layout, premium materials, and durable construction, the Grandio Ascent 8×20 Greenhouse is the perfect investment for gardeners looking to maximize their growing potential year-round.
🌿 Order yours today and grow with confidence! 🌱🏡
Premium Kit Includes:
- 6mm Twin-Wall Panels
- (5) Roof Windows
- Base Kit
- Rain Gutters
- Snow Load Kit
- (5) Auto Roof Vent Openers
- (2) Packs of 10 Plant Hangers
- (1) Trellis Kit
- (1) Drip Kit
- (1) 8 oz. Brillianize Cleaner
Basic Kit Includes:
- 6mm Twin-Wall Panels
- (5) Roof Windows
- Base Kit
- Rain Gutters
- Snow Load Kit
Actual Size: 8’2″ W x 19’11” L x 7’9″ H
Specifications
- Height: 7′ 9″
- 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: 6mm twin-wall UV protected polycarbonate.
- Door Width: 42″
- 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 Ascent 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: 2015 Grandio Ascent 8×20 Manual
Note: In order to read the manuals, you need the Adobe Acrobat PDF reader.
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.