Black Friday: 5% OFF on select brands with code BLACKFRIDAY5 + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Black Friday: 5% OFF on select brands with code BLACKFRIDAY5 + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
At OffGrid Lux, we're committed to offering you the best prices online. That's why we have a Price Match Guarantee in place. If you find a lower price for the same product elsewhere, we'll match or beat it to ensure you get the best value.
For full details on our Price Match Guarantee, including eligibility criteria and how to request a price match, please click here to view our complete policy.
Shipping & Order Policy at OffGrid Lux
When you place an order, we confirm stock availability before charging your card. Orders typically process within 1-2 business days, and shipping is fast—most orders arrive within 4-7 days. We use reliable third-party carriers and provide tracking information promptly.
For more details, click here to view our full Shipping Policy.
Refunds & Returns at OffGrid Lux
We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.
For more info, check out our full Returns & Refunds Policy here.
Why Pick the Summit 12x16 Greenhouse Kit for Your Garden?
Now accepting backorders — stock expected to arrive by mid to late December!
Actual size: 12' W × 15.89' L × 9.25' HSizes: 12×8, 12×12, 12×16, 12×20, 12×24, 12×28, 12×32Panels: 10 mm twin-wall polycarbonate (R≈1.89, U≈0.53)Frame: 1.6 mm heavy-duty powder-coated aluminumVentilation: (8) roof vents + rain guttersRatings: wind up to 76 mph; snow up to 25 lb/ft²*
The Grandio Summit 12x16 Greenhouse Kit gives you a durable, spacious and efficient growing space that works in every season. Built with a reinforced aluminum frame and insulated 10mm twin wall polycarbonate panels, this greenhouse is engineered to keep your plants protected through heat, cold and seasonal storms. The attractive barn style design offers excellent headroom and wide growing space, making it ideal for both beginners and experienced gardeners who want year round performance.
Whether you are cultivating vegetables, overwintering plants or starting a larger gardening project, the Summit 12x16 delivers the reliability, size and strength you need.
Why Pick the Summit 12x16 Greenhouse Kit for Your Garden?
Built for Tough Weather and Long Term Use
The Summit 12x16 is built with a 1.6 mm powder coated aluminum frame that provides exceptional strength. Combined with 10 mm UV protected twin wall polycarbonate panels that carry an R value of 1.89 and a U value of 0.53, the structure helps maintain consistent interior temperatures and withstand demanding conditions throughout the seasons.
Excellent Ventilation and Smooth Entry
Eight roof windows provide strong airflow to help regulate humidity and temperature, keeping your plants healthy throughout the year. The sliding double doors are top hung to prevent jamming and built with durable nylon wheels for long lasting performance. The magnetic latch with key lock adds convenience and security.
Added Features for Stability and Convenience
The Summit 12x16 comes ready for year round use with included rain gutters, a drain kit, an extreme snow load kit and a flat mount anchor kit. These features improve durability, water management and overall stability, giving you confidence that your greenhouse is built to last.
BENEFITS
Built for Tough Conditions: The Summit 12x16 is crafted with a strong 1.6mm aluminum frame and 10mm twin-wall polycarbonate panels that help keep temperatures stable inside, making it a great option for growing in any season. Its solid structure ensures it can handle various weather conditions, so you can garden confidently year-round.
Excellent Airflow and Easy Entry: This greenhouse has eight roof windows for plenty of fresh air, essential for keeping plants healthy and happy. The smooth-sliding double doors are hung from above, preventing any jams, and they’re built with durable materials to withstand frequent use, ensuring easy access without hassle.
Extra Features for Convenience and Stability: The Summit 12x16 comes with helpful additions like rain gutters, a drain kit, a snow load kit, and an anchor kit to keep it steady in any conditions. The doors have durable nylon wheels and lockable handles for security. These features make it low-maintenance and reliable, so you can enjoy it for many seasons to come.
The Summit 12x16 Greenhouse Kit gives you a dependable, spacious, and easy-to-use growing space, making it a great choice for any gardener looking to grow plants all year long.
SPECIFICATIONS
Frame
Heavy Duty Aluminum
Color
Powder-Coated Green
Panels
10mm Twin-wall UV-protected Polycarbonate
Doors
Bind-resistant Sliding Double doors
Latch
Magnetic latch doors with key lock
Reinforcement
Cross-roof truss and cross-corner bracing
Hardware
Stainless steel nuts and bolts
Rain Gutters
Yes
Ventilation
8 Roof vents with adjustable manual openers/latches
LP SmartSide® engineered wood siding with treated wood frame
LP SmartSide® engineered wood siding with treated wood frame
Panel Material
10mm Twin-wall Polycarbonate
8mm Twin-wall Polycarbonate
Corrugated polycarbonate roofing panels
Corrugated polycarbonate roofing panels
Door Type
Sliding double doors
Hinged double doors
Single door with 2 transom windows (Optional Double Door Available)
Colonial Dutch door with 1 transom window
Ventilation
8 roof vents
1 Automatic roof vent(s)
Operable windows (with screens) + 2 gable-end air vents
Operable windows (with screens) + 2 gable-end air vents
Color
Green powder-coat aluminum frame • clear polycarbonate panels
Black powder-coat aluminum frame • clear polycarbonate panels
Primed and ready to paint
Primed and ready to paint
Included Accessories
Rain gutters, snow load kit, anchoring kit
Rain gutters, roof vent, base kit
Shelves on 3 sides
Shelves on 3 sides, hanging rods, 2 louvers
Optional Accessories
Drain Kit - Downspout for Grandio Greenhouse Gutter Systems, designed for installation at each of the four corners of the greenhouse. It’s made to be installed directly into the aluminum frame and gutter of the greenhouse. The easy-to-install downspout drain kit includes (4) 20mm black pipes, (4) gutter attachment gaskets, and (4) side wall brackets with screws. One kit has everything needed to add downspouts to a Grandio Greenhouse.
Automatic Roof Vent Opener - Automatically opens and closes the roof vent window based on temperature changes. The opener contains a metal cylinder with a mineral that expands when heated, pushing a piston to open the vent. When the temperature cools, the mineral contracts, and a spring closes the vent, resetting the piston. The vent opens and closes gradually, allowing the right amount of airflow for cooling.
Auto Louver Window Opener - Automatically opens and closes the louver window as the temperature changes. The opener has a metal cylinder with a mineral that expands when heated, pushing a piston to open the vent. As the temperature cools, the mineral contracts, and a spring closes the vent and resets the piston. The vent opens and closes gradually, providing just the right amount of airflow for cooling. This Auto Louver Opener attaches to the left side of your louver window.
Louver Window - add more ventilation to your greenhouse. Louver window frame comes powder coated in green, with 6mm twin wall polycarbonate panels.
The Drip Irrigation Watering Kit - is a water-efficient system designed for shrubs, trees, flowers, and bushes, covering up to 150 square feet with easy expandability. It's a DIY-friendly installation with no gluing required, using high-quality UV-resistant materials. The kit includes 24 pressure-compensating drippers (20 at 1 GPH, 2 at 2 GPH, and 2 at 4 GPH) for consistent water delivery to plant roots. A backflow preventer ensures water safety by preventing siphoning into the main supply.
Moisture Control Kit - featuring Anti Dust Tape and Waterproof All-Weather Silicone Caulk, protects your Grandio Greenhouse from insects, dirt, mold, and algae. The tape's 45-micron filters allow condensation to escape while preventing algae and mold growth with a fungicidal coating. Combined with the silicone caulk, this kit ensures long-lasting protection and maintains the greenhouse's pristine condition.
Shade Net - are essential for regulating greenhouse temperatures, especially during sunny spring, autumn, and summer days. Designed to reduce intense sunlight by 50%, they help keep your greenhouse cooler and prevent overheating.
Plant Hangers - These versatile plastic hangers are designed for greenhouse use, supporting shade cloths, hanging baskets with quarter-inch hooks, and stringing taller plants or vines. Easy to install, they simply twist into the roof rafter channels.
SHIPPING INFO
Lead Time is 1 to 2 days. Orders typically arrive within 1-7 business days, depending on your location:
West: 2-4 days
Northwest: 1-3 days
Southwest: 3-5 days
Midwest: 4-6 days
East: 5-7 days
Note: Delivery times are estimates and exclude order processing time. Delays may occur due to weather or carrier issues.
FAQ
What sizes are available for the Grandio Summit Greenhouse?
The Grandio Summit Greenhouse is available in multiple sizes: 12x8, 12x12, 12x16, 12x20, 12x24, 12x28, and 12x32. All models feature the same barn-style frame and 10mm twin-wall polycarbonate panels.
How strong is the Grandio Summit greenhouse frame?
The Summit uses a 1.6mm thick heavy-duty aluminum frame with cross-roof truss and corner bracing. It is rated to withstand winds up to 76 mph and snow loads up to 25 lbs/ft² with the included snow load kit.
What kind of panels are used in the Summit greenhouse?
The greenhouse uses 10mm twin-wall UV-protected polycarbonate panels that offer an R-value of 1.89 and a U-value of 0.53 for excellent insulation and plant protection.
Does the Summit come with built-in ventilation?
Yes. All Summit models come with 16 roof vents featuring manual openers. Optional automatic vent openers and louver window kits are also available for improved airflow control.
Are the doors easy to operate?
Yes. The Summit features bind-resistant sliding double doors with high-quality nylon wheels and brass bolts for smooth, long-lasting operation. Doors are also lockable with magnetic latches for added security.
What accessories are included with the greenhouse?
All Summit kits include rain gutters, a drain kit, a snow load kit, and a flat mount anchor kit. Premium kits add automatic roof vent openers, plant hangers, a trellis kit, a drip irrigation system, and more.
Can the Summit be installed on different foundations?
Yes. The Summit can be mounted on a concrete pad, wood base, or directly onto level ground using the included anchor kits. Detailed installation manuals and videos are provided to guide you through the process.
Is this greenhouse suitable for cold climates?
Absolutely. With 10mm panels, a high R-value, and the included snow load kit, the Grandio Summit is ideal for year-round gardening—even in harsh winter conditions.
Free Shipping & No Tax to the United States
Enjoy Free Shipping on Orders Over $200. No Sales Tax (Excludes WY).
I bought this battery to replace my battery that died in my Ecotric 20810 (the fat tire one from around 2019 timeframe). Went on a 2+ hour ride and still had plenty of juice to spare. Wish it was cheaper but....it's a big battery and that's the retail price I guess.
Ordered four inverters for a customer whose solar system was damaged by a utility surge. OffGridLux advertised these inverters at $2500. Upon ordering the inverters I was assured they were in stock and would be delivered. The next day I received a refund and the price of the inverters went up from $2500 to $3100 on the OffGridLux website. Chris in customer service explained the inverters were a new product and the $2500 price was added by mistake and the real price was $3100. He also told me his warehouse made a mistake they only had 2 of the 4 available. After expressing my frustration at the situation since the customer was already quoted the lower price, Chris worked out a deal and gave us the inverters at cost to OffGridLux for $2850 instead of $3100. Chris promptly adjusted the charge and made sure the 2 inverters were shipped out asap. As a small business owner I understand how small mistakes can be costly and sometimes the little things are the biggest problem. In good fashion Chris represented OffGridLux and my interests by communicating and figuring out an amicable solution for all parties involved. Thank you again Chris. You sir a true asset to your company.
Nice bike love the looks not as powerful as my pro 2 as one might expect but overall nice bike i did take it on a 47 mile trip and still had 50.1 percent left when i got home so no need to worry about a battery the best part of this bike is the company that sold it. I've been so impressed with this company which is why i purchased my 2nd bike from them they are nothing short of exceptional buy with confidence they are with your every step of the way and very fast to respond to emails and help with any problem ive come across i wish they sold other bikes just so i could buy from them off the grid lux is by far my favorite store keep it up guys I'll keep looking to see what you stock next
This place is one of the best companies I've ever purchased from they have excellent customer service fast shipping and answer all your questions in a timely manner i love my bike i had a small problem which they quickly addressed i have been extremely impressed with how helpful they have been i highly recommend this company I promise you won't regret it
First id like to say that their customer service is 2nd to none. I was informed about everything that was going on with my new bike they are very fast to respond to messages and shipping is extremely fast buy with confidence you won't regret it
I purchased the Mirage Vision 55 Gold Ultra HD (4K) Series HDTV two weeks ago and have enjoyed watching football and other sporting events on my patio. The TV's weatherization modifications are very professionally installed. I feel like I received a well engineered product and one that will hold up to the weather elements here in central Texas. The picture quality is outstanding. The video/audio source for my Mirage Vision HDTV is a HDMI cable that runs to a cable box in a closet in the house. I'm using a HDMI IR extender to control the cable box in the house and it all works great. The WIFI capability of the HDTV works well too as my daughter enjoys watching Netflix. Nice product!"
The bike is excellent! My range anxiety is no more! 18 miles and only lost 8 percent compared to my last e-bike that is a huge win! I bought this to use as a commuter and man it's been more then enough! Crossing the road and reaching the max speed of 44mph despite being a little under 250! This is my best purchase for the year cant wait for more relaxing extended bike trips!
Shipping was fast, setup was easy and they even followed up after delivery which I totally didn’t expect! Pretty solid experience overall ,would buy again.
I was a little hesitant before buying, but after riding it for a few weeks, I can confidently say it was the right choice. The bike is fast, smooth, and super fun to ride. It handles hills effortlessly, and the battery lasts way longer than I expected.
Shipping was quick, and it was easy to set up. Customer service was also great they answered my questions fast and made sure everything was good.
The equipment arrived packaged very well and in great shape. Quick shipping and tracking information. The freeze dryer and industrial pump has worked wonderfully. Many batches of candy. Batches of chicken, spaghetti sauce, minestrone soup and tons on apple slices, wedges and apple sauce. Enjoying the machine while preparing for the future.
I was super scared to buy it at first because it took a little over a year to save for it, I received it in just about a months time and it’s been running almost non stop since it arrived! I had to get extra trays to prefreeze my next load because im always thinking of something else to go in lol. No issues so far, super happy with it :) Thanks Stayfresh!
I bought this battery to replace my battery that died in my Ecotric 20810 (the fat tire one from around 2019 timeframe). Went on a 2+ hour ride and still had plenty of juice to spare. Wish it was cheaper but....it's a big battery and that's the retail price I guess.
Nice bike love the looks not as powerful as my pro 2 as one might expect but overall nice bike i did take it on a 47 mile trip and still had 50.1 percent left when i got home so no need to worry about a battery the best part of this bike is the company that sold it. I've been so impressed with this company which is why i purchased my 2nd bike from them they are nothing short of exceptional buy with confidence they are with your every step of the way and very fast to respond to emails and help with any problem ive come across i wish they sold other bikes just so i could buy from them off the grid lux is by far my favorite store keep it up guys I'll keep looking to see what you stock next
First id like to say that their customer service is 2nd to none. I was informed about everything that was going on with my new bike they are very fast to respond to messages and shipping is extremely fast buy with confidence you won't regret it
The MirageVision 55 inch Gold Outdoor TV is just the perfect addition to our outdoor oasis. The product is top notch and the ordering process, shipping and installation was perfect. The staff was very helpful and friendly. Will refer a friend any time. Thank you!
Awesome bike. Was delivered on time. Bike was in good condition, no dings or dents. This website had the best price available.
MEELOD DK300 PRO 20" Retro Moped Style Electric Bike 1200W Peak Motor 48V 15Ah Dual Batteries
Tony DeMarco
Top Notch
The MirageVision 55 inch Gold Outdoor TV is just the perfect addition to our outdoor oasis. The product is top notch and the ordering process, shipping and installation was perfect. The staff was very helpful and friendly. Will refer a friend any time. Thank you!
MirageVision Partial Sun Outdoor TV – 1500 Nits, Mini-LED Pro – Gold Series
Adam D.
I have literally quadrupled the amount of time I spend on my roof top deck now that I have a MirageVision 55 television mounted on the wall. My home is now the go-to for friends and family to gather when watching sports and it's all centered around my new television. Thanks for delivering such a high quality product!
MirageVision Outdoor Shade TV – ULED, Mini-LED, Google TV – Silver Series
Joe - Chicago
Loving It!
We're loving tv !!!!
MirageVision Direct Sun Outdoor TV Neo QLED, 2500 Nits
Timothy C.
Very professionally installed
I purchased the Mirage Vision 55 Gold Ultra HD (4K) Series HDTV two weeks ago and have enjoyed watching football and other sporting events on my patio. The TV's weatherization modifications are very professionally installed. I feel like I received a well engineered product and one that will hold up to the weather elements here in central Texas. The picture quality is outstanding. The video/audio source for my Mirage Vision HDTV is a HDMI cable that runs to a cable box in a closet in the house. I'm using a HDMI IR extender to control the cable box in the house and it all works great. The WIFI capability of the HDTV works well too as my daughter enjoys watching Netflix. Nice product!"
MirageVision Partial Sun Outdoor TV – 1500 Nits, Mini-LED Pro – Gold Series
