Monticello Greenhouse Mont-8-BK


  • Approximately 8ft. W x 20ft. L x 7.6ft. H (101” x 247” x 90”)
  • 101” x 101” x 90”(Exterior base)
  • Quick assembly construction – One Full Weekend
  • Integrated flush base design, High impact UV stable 8 mm twin wall polycarbonate walls and roof, Heavy duty extruded aluminum frame construction, Black electrostatically painted frame
  • 2 ft. x 2 ft. roof vent with automatic opener, Integrated dual rain water gutter system
  • Large 4 ft. x 6 ft. wide door opening, Hinged Lockable Double Doors, New Patent Pending Twist & Lock single bolt  (makes assembly quicker and easier over prior version)
  • Accessories available separately (not included in this package) shade clothes, watering systems, potting sinks, & shelving kits
  • Expandable – ability to expand greenhouse in 4 ft. increments as needs grow
  • Efficient – average cost to run greenhouse year-round $100-$150

Plant Based Pros is an Authorized Retailer of Riverstone Products

Items purchased from Plant Based Pros:

    • Are brand new and in original packaging.
    • Are covered by the full manufacturer warranty.
    • Qualify for manufacturer service and support.


The founders of Riverstone Industries have brought their decades of greenhouse experience to the new Monticello 8X8 Black Greenhouse. It features classic gable styling and is a beautiful addition to any garden.

Every aspect of the Monticello has been designed for durability. The frame is made of the highest quality extruded aluminum and the roof has dual joists to withstand high snow loads. The greenhouse is electrostatically painted to ensure proper and even coverage, and it comes with an industry-leading 10 year warranty.

The panels are of the highest quality as well, as the Monticello includes 8mm twin-wall polycarbonate wall and roof panels that are both UV-stablilized and impact resistant. These provide much more insulation than the typical 4mm or single-wall panels found on other units, and are the same panels used in commercial-grade greenhouses.

The Monticello is designed to be assembled in just four hours or so depending on how much help you have with just common household tools. Features like quick-connect screws, the integrated base, the integrated gutter and downspout system, and the pre-hung hinged door and vent speed up the process.

The tall interior height of the greenhouse gives you plenty of working space for even the tallest plants. The Monticello 8X8 provides the durability of a commercial greenhouse with the practicality of a hobby unit, ensuring that it will provide your family enjoyment for years to come.


  • Limited Warranty period: 10 Years


  • Model: Mont-8-BK
  • Exterior base dimensions: 101″ width x 101″ length x 90″ interior peak height
  • Side wall height: 4′ 10″
  • Color: black
  • Frame is made of heavy duty extruded aluminum and is electrostatically painted black
  • Frame uses an average of 40 lbs. more aluminum that imported greenhouses for increased rigidity
  • Dual roof joists for additional strength that also function as hanging plant rods
  • Commercial-grade 8mm twin-wall polycarbonate panels are UV-stabilized, impact-resistant, and give the highest insulation for the lowest operating cost
  • High-quality hinged double doors for easy access, large 4′ wide x 6′ tall opening, and locking ability
  • Tall internal height for added growing space
  • Integrated flush base design
  • 1 roof vent with automatic opener to prevent overheating: 2′ width x 2′ length
  • Integrated rain water gutter system with downspout
  • Fully expandable in 4′ increments
  • Designed for easy assembly in a full weekend with common household tools and all parts are pre-cut and pre-drilled
  • All the necessary heavy-duty galvanized hardware is included
  • Includes clear and fully-illustrated step-by-step instructions
  • Elegant design to fit any yard
  • Perfect for growing in all climates
  • Snow load capacity of 24 lbs. per sq. ft.
  • Wind load of 65 MPH
  • Note: Please be sure to check your local building code for any required permits and issues pertaining to zoning, setbacks, or restrictive covenants
  • Friendly technical support from Riverstone for installation help
  • Ships in 4 boxes: 3 boxes are 58″ x 27″ x 6″ and 1 box is 68″ x 27″ x 3″
  • Shipping weight: 225 lbs.
  • Proudly made in the USA


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