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Durability Meets Ideal Space: A Greenhouse Perfect for Any Backyard
The Grandio Ascent 8x12 Greenhouse offers the ideal balance of robust construction and ample growing space, making it an excellent choice for gardeners seeking a versatile solution for their backyard. Whether you're expanding your gardening endeavors or starting anew, the Ascent 8x12 provides a spacious environment without overwhelming your yard, all while delivering the durable performance Grandio is known for.
Engineered to withstand harsh environments, the Ascent features 6mm twin-wall polycarbonate panels for exceptional insulation and UV protection, paired with a heavy-duty powder-coated aluminum frame. Its thoughtful design ensures plants thrive year-round, even in extreme weather. With built-in rain gutters, three roof vents, and sliding double doors, this greenhouse fosters a healthy, controlled growing environment tailored to your needs.
Key Features:
Built to Last
Constructed with 6mm twin-wall polycarbonate panels and a 1.6mm powder-coated aluminum frame, the Ascent is designed to endure harsh winds, heavy snow, and intense sunlight. It combines superior durability with excellent insulation to keep your plants thriving year-round.
Spacious Yet Practical
With its 8x12 dimensions, the Ascent provides ample room to cultivate a wide variety of plants, vegetables, and flowers without compromising on space in your backyard. Its design balances elegance and functionality, making it an asset to any outdoor space.
Comprehensive Warranty
The Ascent’s lifetime warranty on the aluminum frame and a 10-year warranty on the UV-protected polycarbonate panels ensure long-lasting performance and peace of mind, even in demanding conditions.
Smart Growing Features
The greenhouse includes three adjustable roof vents for optimal ventilation, built-in rain gutters for water collection, and sliding double doors for easy access, creating an environment tailored for plant growth.
Easy Assembly for All
Pre-drilled, pre-cut parts and a detailed instruction manual make assembly straightforward, even for beginners. For added convenience, Grandio’s step-by-step installation video ensures you get it right the first time.
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: 3 roof vents with adjustable manual openers/latches
Dimensions:
Actual Size: 8'2" W x 12' L x 7'9" H
Door Width: 42"

Package Includes:
Basic Kit Includes:
6mm Twin-Wall Panels
(3) Roof Windows
Rain Gutters
Base Kit
Snow Load Kit
Optional Premium Kit Includes:
6mm Twin-Wall Panels
(3) Roof Window
Rain Gutters
Base Kit
Snow Load Kit
(3) Auto Roof Vent Openers
(1) Pack of 10 Plant Hangers
(1) Trellis Kit
(1) Drip Kit
(1) 8 oz. Brillianize Cleaner
Assembly Instructions:
User Manual:
Grandio Greenhouse Ascent 8×12 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.