Riverstone | MONT Standard Greenhouse Kit With 8mm Twin-wall Polycarbonate Glazing

Riverstone Industries


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Not all greenhouses are built the same and the MONT line of greenhouses by Riverstone Industries proves this to be true. The MONT Standard Greenhouse Kit 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 and electrostatically painted Black (guaranteed to contain 0.0% lead), Riverstone Industries' greenhouse uses on average 40 lbs. more aluminum than the imported greenhouse. Why is this important? The weaker the framework the less snow the greenhouse can hold in the wintertime before collapsing on itself also the easier it will get damaged in wind.

While most hobby greenhouses on the market us less expensive thinner walls and roofing materials (the crystal clear walls are as thin as .2mm), the MONT Standard Greenhouse Kit uses professional grade 8mm twin wall polycarbonate. This is the same thickness as used in commercial greenhouses. The twin-wall polycarbonate acts as a double plane window keeping the cooler air in during warm months and insulating the greenhouse from cold air in the wintertime. This makes the MONT Standard Greenhouse more efficient to grow in for a longer period of time than other greenhouses for those who choose to grow year-round.

At 7' 6" tall at the peak, the MONT Standard Greenhouse's above average interior height design also helps with dissipating 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 rainwater gutter system, to the automatic roof vent opener and the newly redesigned hinged double doors with an opening of almost 6' high x 4' wide ensures your enjoyment of the MONT greenhouse for years to come.

The MONT Standard Greenhouse 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 MONT Standard Greenhouse, this rings true. MONT standard Greenhouse comes with 10 years of warranty on the frame and Polycarbonate, the strongest in the industry. For the gardener who is looking for a mid-priced greenhouse system that will support years of hassle-free indoor gardening, this is the greenhouse for you.

Dimension: 8'1" W x 8'1" L x 7'6" H

Quick assembly construction


  • Integrated flush base design
  • High impact UV stable 8mm twin wall
  • Polycarbonate walls and roof
  • Heavy-duty extruded aluminum frame construction
  • Black electrostatically painted frame
  • 2ft x 2ft roof vent with automatic opener
  • Integrated dual rainwater gutter system
  • Large 48" W x 72" H wide door opening
  • Hinged Lockable Double Doors
  • New Patent Pending Twist & Lock single bolt, makes assembly quicker and easier over the prior version.

Accessories available separately (not included in this package):

  • Interior shade cloth system
  • programmable watering systems
  • potting sinks
  • workbench system

Expandable - ability to expand greenhouse in 4ft increments as needs grow

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

Care Instructions: soapy water

DIY assembly construction, Integrated flush base design.

Allow for a FULL weekend to fully assemble (ground prep NOT included). Two people suggested for assembly. Actual time to construct will depend on size of the greenhouse and skill levels. Manual is fully illustrated.

Product Length: 97"

Product Height: 90"

Product Width: 97"

Product Width: 214"

Warranty: 10 yr limited warranty

Country of Origin: USA

Riverstone MONT Standard Greenhouse Overview

10 Year Limited Warranty

7 Great reasons to buy from us:

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Questions & Answers

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  • I don't see shade system for this. How much

    Riverstone sells these https://mygreenhousestore.com/products/riverstone-industries-monticello-internal-shade-cloth-8ftx8ft internal shades for the MONT line. We also carry a variety of other external and internal shade clothes.

  • Is it possible to have doors on both the front and back of the unit? Is there a structure to step over when the doors are open?

    You can order an additional door kit and have one on each end of the greenhouse. There is a structure to step over of just under an inch.

  • Can we turn the 8x12 into an 8x10? Or do you have an 8X10?

    Sorry, we don't have any 8' x 10'.  Most of the greenhouses are 8' x 8', 8' x 12', 8' x 16' and  so on.

  • Hi do you have one that is 10x16

    Yes, there is a 10' x 16' Educational Greenhouse.  Is that what you are asking about?