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Riverstone Industries

Mont 8FT x 12FT Black Greenhouse MONT-12-BK

Regular price $4,399.99
Regular price $4,399.99 Sale price $4,399.99
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Free Portable Greenhouse with Mont Greenhouse Purchase!!!

Do you love to tend and cultivate gardens? Building a greenhouse is an ideal project for improving your garden makeover and making it cozier. Of course, it can also be a big project, but it still depends on how you want it to be.

The Mont Black Greenhouse is designed for gardeners looking to grow their crops in an ideal environment. It has a unique design, and upgraded 8mm twin-wall polycarbonate with a high-impact UV feature that allows more light exposure and better use of available resources - all at an affordable price!

Why do you need a Mont 8ft x 12ft Black Greenhouse?

The Mont Black Greenhouse is proudly made in the United States. Our goal is to ensure you have the type of greenhouse you want. Built from 85lbs aluminum, or US grade aluminum, not the thinner, brittle foreign aluminum. It is electrostatically painted black and guaranteed not to contain any lead.

The greenhouse is called a "self-standing" unit because it does not need any other building or structure to house its components. It can be easily assembled, and once built, you will never worry about this small business going anywhere because there's no risk of collapse from wind damage, even during winter months! The 8mm twin-wall coverings used on both walls & roofs provide insulation while keeping heat retention at maximum level, ensuring your plants thrive no matter what environment they're exposed to outside.

Introducing Mont 8ft x 12ft Black Greenhouse



  • Approximately 8ft. W x 12ft. L x 7.6 ft. H (101" x 149.75" x 90")
  • 2- 2ft x 2ft roof vent with automatic opener, Integrated dual rain water gutter system
  • Large 4FT x 6FT wide door opening
  • High impact UV stable 8mm twin-wall polycarbonate walls and roof

Features of Mont 8FT x 12FT Black Greenhouse MONT-12-BK:

  • Quick assembly construction
  • Integrated flush base design, Heavy-duty extruded aluminum frame construction,
  • Black electrostatically painted frame
  • Hinged Lockable Double Doors, New Patent Pending Twist & Lock single bolt
  • Accessories available separately (not included in this package) shade clothes, watering systems, potting sinks, & shelving kits
  • Expandable - ability to expand greenhouse in 4ft increments as needs grow
  • The snow load capacity of 24lbs/sq. ft., Wind load of 65 MPH
  • Efficient - average cost to run greenhouse year-round $125-$175



  • SKU #: MONT-12-BK
  • Color: Black
  • Material: Aluminum/ Polycarbonate
  • Size: Approximately 8ft. W x 12ft. L x 7.6 ft. H (101" x 149.75" x 90")
  • Number of Doors: 1
  • # of Vent Openings: 2
  • Max Wind Resistance: 65 MPH
  • Max Roof Load lb/sq ft: 24lbs/sq. ft
  • Country of Origin: USA
  • Assembly Required (Y or N): Y
  • Est Assembly Time: Allow for a FULL weekend to Fully Assemble (ground prep included). Two people suggested assembly. The Manual is fully illustrated.
  • Warranty: 10 yr. warranty
  • What's included / What's in the box? : All Aluminum framework, all PC panels, set of double doors ( assembled), hardware, instruction manual, screwdriver, and wrench

What Planet Greenhouse Exclusively Offer For You?

Planet Greenhouse is comprehensive in nature. We offer our customers the ability to choose quality over quantity greenhouses with the best service we can provide.

We believe our customers' needs are functional greenhouses they can use in daily gardening, so we made it easy with complete, quality, and budget-friendly choices.

  • The Snow Load on the Mont Greenhouse is standard at 24 lbs/ sqft.
  • The wind load is designed for 65 mph. 
  • The Mont Greenhouses are customizable and can be made to meet any local ordinances required to gain permits.


The buyer's responsibility is to notify us of all the requirements.
Prior to ordering, you have to inform us if there might be additional costs for local requirements. It may vary depending on your location.

  • Signed and sealed drawings are included in the cost of the greenhouse. 
  • They are based on your local municipalities requirements and will need to be supplied and confirmed by the purchaser. 
  • Riverstone Industries is not responsible for building a greenhouse that does not meet local ordinances from the building department. 

All our Mont Greenhouses come with a full assembly manual, and our team is here to walk you through all steps of the construction process as needed.


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