Commercial-grade glazing
8 mm twin-wall polycarbonate works like a double-pane window, holding heat in winter and keeping the greenhouse cooler in summer.


Not all greenhouses are built the same and the MONT line of greenhouses by Riverstone Industries proves this to be true. The MONT is proudly made in the USA. Applying good old American ingenuity to make the best product for our customers and help to elevate the industry standards of all greenhouses.
Constructed from the highest quality extruded aluminum (US grade - not the thinner & more brittle foreign aluminum) and electrostatically painted Black (guaranteed to contain 0.0% lead), our greenhouse uses on average more than 40 lbs. more aluminum than the average imported greenhouse. Why is this important? The weaker the framework the less snow the greenhouse can hold in the winter time before collapsing on itself also the easier it will be get damaged in wind.
While most hobby greenhouses on the market use less expensive thinner walls and
roofing materials (the crystal clear walls are as thin as .2mm), the MONT uses professional grade 8mm twin wall polycarbonate. This is the same thickness as used in the commercial greenhouses. The twin wall polycarbonate acts as a double pain window keeping cooler air in during warm months and insulating the greenhouse from cold air in the wintertime. This not only makes the MONT more efficient to grow in for a longer period of time than other greenhouses but it also adds to the efficiency of growing, cutting down electric bills for those who choose to grow year round.
At 7ft 6in tall at the peak the MONT's above average interior height design also helps with displacing heat within the greenhouse while also allowing for the tallest gardeners not to have to bend down when inside the greenhouse.
From the integrated base to the built in rain water gutter system, to the automatic roof vent opener and the newly redesigned hinged double doors with an opening of almost 6ft high x 4 & ½ft wide ensures you are sure to enjoy the Mont greenhouse for years to come.
The MONT also offers the ability to grow as your needs grow with the 4ft extension kit that can be purchased anytime in the future. You get what you pay for and with the Monticello this rings true. We back the Monticello with the strongest warranty in the industry (10 yrs.) on the frame and Polycarbonate. For the gardener that is looking for a mid-priced greenhouse system that will supply years of hassle free indoor gardening this is the greenhouse for you. We hope you enjoy growing in the Monticello as much as we enjoyed designing it.

🌳 Using the tracking number, you can determine how many boxes should be delivered. If you have not received all your boxes within 14 days of shipment, please reach out to us.
🌳 A complete inventory of all boxes needs to be done within the first 90 days of receiving boxes.
🌳 If any of the boxes are damaged in shipment, please DO NOT refuse the shipment. Be sure to take images of the damaged packages and parts. Any missing or damaged parts will be provided to within the first 90 days. Part requests can be ordered through the Riverstone Industries website:
https://riverstoneindustries.com/part_order_request
The following video shows how to assemble a Riverstone MONT Greenhouse
Monticello · Hobby Greenhouse
Why customers choose it
8 mm twin-wall polycarbonate works like a double-pane window, holding heat in winter and keeping the greenhouse cooler in summer.
The flush base is built into the frame, and a dual rainwater gutter system carries water away.
Three 2' x 2' roof vents open automatically, and vent locks hold them shut in extreme weather.
Hinged, lockable double doors open almost 6' high and 4 1/2' wide, with a door latch made for extreme weather.
The patent-pending Twist & Lock single bolt makes assembly quicker and easier than earlier versions.
The details
| Floor area | 128 sq ft (8' x 16' nominal) |
|---|---|
| Exterior size | 101" W x 198.25" L x 90" H |
| Walking height | 7' 6" at the peak |
| Frame | Heavy-duty US-grade extruded aluminum, painted black |
|---|---|
| Glazing | 8 mm twin-wall polycarbonate, UV stable, walls and roof |
| Snow load | 24 lbs/sq ft |
| Wind load | 65 mph |
| Base | Integrated flush base |
| Gutters | Integrated dual rainwater gutter system |
| Made in | USA, by Riverstone Industries |
| Door | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W |
|---|---|
| Roof vents | Three, each 2' x 2', with automatic openers |
| Weather locks | Door latch and vent locks for extreme weather |
| Assembly | A full weekend with 2 people (ground prep not included) |
|---|---|
| Hardware | Patent-pending Twist & Lock single bolt |
| Extension | 4' extension kit available (4' x 8' x 7' 6") |
| Warranty | 10 years on the frame and polycarbonate |
| Care | Soapy water |
Find the right fit
| Model | Floor area | Exterior size | Walking height | Door | Price from | Link |
|---|---|---|---|---|---|---|
Riverstone MONT Greenhouse 8x8
| 64 sq ft (8' x 8' nominal) | 101" W x 101" L x 90" H | 7' 6" at the peak, 4' 10" at the side walls | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W | $3,149 | View |
Riverstone MONT Greenhouse 8x12
| 96 sq ft (8' x 12' nominal) | 101" W x 149.75" L x 90" H | 7' 6" at the peak | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W | $4,149.99 | View |
Riverstone MONT Greenhouse 8x16
Viewing | 128 sq ft (8' x 16' nominal) | 101" W x 198.25" L x 90" H | 7' 6" at the peak | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W | $5,099 | |
Riverstone MONT Greenhouse 8x20
| 160 sq ft (8' x 20' nominal) | 101" W x 247" L x 90" H | 7' 6" at the peak | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W | $6,149 | View |
Riverstone MONT Greenhouse 8x24
| 192 sq ft (8' x 24' nominal) | 101" W x 295.75" L x 90" H | 7' 6" at the peak | Hinged, lockable double doors, opening almost 6' H x 4 1/2' W | $6,999 | View |
Plan, build and permit
Every manual, drawing and certificate is hosted on our own servers, so the links always work. Open on any device or save a copy for your builder or permit office.
Free curbside freight delivery
Choose your size, color and options. Your greenhouse ships from the manufacturer's warehouse, packed for freight.
We'll contact you to set up a delivery time frame that works for you.
Delivery is by LTL motor freight on an 18-wheeler. Let us know about tight roads or low wires so we can plan ahead.
Someone needs to be there to receive the delivery. The driver does most of the work but may need a hand.
Foundations and bases are bulky, so we recommend ordering them together with your greenhouse to avoid a separate freight charge.
Good to know
Can't find your answer? Our greenhouse specialists are happy to help you choose.
678-408-8222 Email usYes. Shipping is free. Locations with limited access, such as islands, are rare exceptions that may carry an extra fee, and we'll tell you before anything ships.
Yes. If you find the same greenhouse for less from an authorized dealer, call or email us with the offer and we'll review it.
Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.