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Spacious Greenhouse for Dedicated Gardeners: Built to Last, Designed to Grow
The Grandio Ascent 8×20 Greenhouse offers an exceptional blend of expansive growing space and robust durability, making it the ideal choice for gardeners with grand ambitions. Designed for larger yards and extensive projects, this greenhouse provides the perfect environment for cultivating lush gardens, fresh produce, or exotic plants year-round. Its sleek design, reinforced construction, and advanced features make it a premium solution for serious gardening enthusiasts.
Built to endure all weather conditions, the Ascent 8×20 ensures that your plants are shielded from the elements, offering unparalleled peace of mind. Whether you’re scaling up your gardening efforts or starting an ambitious new venture, this greenhouse is engineered to help you achieve remarkable results.
Key Features:
Durable Construction for All Seasons
Crafted with a heavy-duty, powder-coated aluminum frame and 6mm twin-wall UV-protected polycarbonate panels, the Ascent 8×20 is built to withstand winds up to 76 mph and snow loads of 25 lbs./ft². Its robust design guarantees long-lasting protection and performance in any climate.
Expansive Growing Area for Larger Projects
Spanning an impressive 8×20 feet, this model provides nearly 160 square feet of space, perfect for accommodating diverse crops, larger plants, and additional gardening tools.
Optimized Growing Environment
Equipped with five adjustable roof vents and integrated rain gutters, the Ascent 8×20 ensures optimal air circulation, temperature control, and efficient water management, creating the perfect conditions for healthy plant growth.
Simple Assembly
With pre-drilled and pre-cut parts, assembling is straightforward and accessible, even for first-time builders. The greenhouse includes a detailed instruction manual and an installation video to guide you through the process step-by-step.
Reliable Warranty
Enjoy confidence in your investment with a lifetime warranty on the frame and a 10-year warranty on the polycarbonate panels, ensuring long-term reliability and protection.
Specifications:
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.
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
Dimensions:
Actual Size: 8'2" W x 19'11" L x 7'9" H
Door Width: 42"

Package Includes:
Basic Kit Includes:
6mm Twin-Wall Panels
(5) Roof Windows
Rain Gutters
Base Kit
Snow Load Kit
Optional Premium Kit Includes:
6mm Twin-Wall Panels
(5) Roof Window
Rain Gutters
Base Kit
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
Assembly Instructions:
User Manual:
Grandio Ascent 8×20 Greenhouse Manual
FAQs:
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.
How long will my order take to get to me?
Lead time is approximately 1-2 days. The order is typically delivered between 1-7 days depending upon the location:
West: 2-4 business days
Northwest: 1-3 business days
Southwest: 3-5 business days
Midwest: 4-6 business days
East: 5-7 business days
Note: Delivery times are approximate and do not include order processing. Weather conditions or carrier delays may impact timelines.
We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Vista Greenhouses.
But first, you should definitely hear from our customers here.
- Free Shipping USA wide. No extra charges. Ever.
- Price Match Guarantee. Best prices online guaranteed.
- 30 Day Easy Returns. No happy with your product, we'll take it back no questions asked.
- Great Service. We pride ourselves on the best service, anywhere.
- Your Satisfaction Guaranteed. We handpick our products for quality, we know you'll love them. But is there is ever something wrong, we'll fix it.
Shipping is FREE on all orders to customers within USA.
We don't want to mess around with fine print and extra charges, we like things to be simple and easy.
Want to know about our Returns Policy? Read more here.
Order Confirmation:
As soon as you place your order you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorised your credit card for the purchase.
As soon as we receive your order we automatically check to confirm that your order is in stock and available for immediate shipment. If your item is on back-order or unavailable we will void the pre-authorisation and reach out to you via e-mail to see if alternate arrangements can be made.
If your item(s) are available for immediate shipment (within 5 business days) we will process the charges and get to work preparing your order for shipment.
Order Shipment:
If your order is in stock and we process the charges to your credit card it will ship within three business days from the date of your order.
We will send you shipping confirmation within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.
If you do not receive shipping confirmation from us within four business days of your order feel free to follow up with us at sales@vistagreenhouses.com.
International Orders:
Please be aware that our products are made specifically for the USA market. This means that they require a [choose 110V or 240V] electrical system to function correctly.
Our products have generally not been certified for use with other countries electrical safety standards but all of our products are certified to USA standards.
We will happily ship our fantastic products to international customers. Due to the extremely wide variety of product dimensions we will provide an up to date shipping price quote for you on request.
If you are happy with our shipping quote we will prepare an order and payment though our ultra secure online payment gateway.
Damages:
Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery or do not agree to accept the delivery.
If you do accept delivery you are required to immediately take photos using your smart phone or camera of the damaged packaging or products inside the packaging.
If your item(s) do arrived damaged please send photos to sales@vistagreenhouses.com, then visit our Returns page and lodge your return claim online.