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Riverstone Industries

MONT BASIC 12FT. GREENHOUSE

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Care

  • No special care needed
  • Spot clean with mild soap
  • Machine washable covers (if removable)
  • easy-care, low-maintenance luxury living

 

MONT Greenhouse  ·  8′ × 12′  ·  Made in USA

MONT 8′ × 12′ Black Greenhouse

Heavy-Duty Aluminum — 8mm Twin-Wall Polycarbonate — 10-Year Warranty

The MONT 8 × 12 is the foundation — a year-round, heavy-duty greenhouse built from U.S.-grade extruded aluminum with 55+ lbs more material than typical imports, sealed with twin automatic roof vents, twin rain gutters, and patent-pending twist & lock door hardware. Everything you need to grow seriously, without the accessories. Add the Premium Package for workbenches, shade, irrigation, and sink — or start here and configure to your own needs. Made in the USA. 10-year warranty, strongest in the industry.

10-Year Warranty Made in USA Year-Round Use 2 Auto Roof Vents Patent-Pending Door Hardware Expandable


8 × 12 Footprint 76 Peak Height 2 Auto Roof Vents 10 yr Warranty

Base Model vs. Premium Package — What’s the Difference

The MONT 8 × 12 base model and the MONT 8 × 12 Premium Package share the same structural foundation — identical frame, identical panels, identical doors, identical vents, identical warranty. What separates them is what is already installed when you open the box. The base model ships as a complete, ready-to-assemble greenhouse structure. The Premium Package adds commercial workbenches, an interior shade system, a programmable watering system, and the only built-in greenhouse sink on the market — all pre-specified to fit the MONT’s interior precisely.

The base model is the right choice for buyers who want to configure their own interior setup, already own specific accessories, or are starting with a dedicated growing method — hydroponics, raised beds, hanging systems — that doesn’t align with the standard workbench layout. The Premium Package is the right choice for buyers who want a fully operational, professionally equipped growing environment from day one, with no additional sourcing required.

One meaningful structural difference between the two models is ventilation. The base 8 × 12 includes two automatic 2′ × 2′ roof vents with openers, compared to one in the Premium Package configuration. In the warmer months across Southern California, dual roof vents provide significantly better passive airflow through the 96 square feet of growing space — an important consideration when choosing between the two.


Structure & Features

Heavy-Duty Aluminum Frame — 55+ lbs Extra

U.S.-grade extruded aluminum with over 55 lbs more material than typical import greenhouses. Black electrostatic lead-free paint permanently bonded to resist peeling, chipping, and corrosion. Engineered for heavy snow loads and sustained wind pressure year-round.

8mm Twin-Wall Polycarbonate Panels

Double-wall construction traps an insulating air layer equivalent to double-pane glazing — retaining heat in winter and reducing temperature buildup in summer. UV-stable to prevent yellowing and maintain optical clarity over years of exposure.

Patent-Pending Twist & Lock Door Hardware

The 4′ × 6′ hinged double doors feature MONT’s patent-pending twist & lock bolt system for secure, rattle-free closure with one-hand operation. Lockable for security. Wide enough to accommodate wheelbarrows, containers, and large equipment.

Two Automatic Roof Vents (2′ × 2′ each)

Two temperature-activated roof vents open automatically as interior heat builds and close as it dissipates — no power connection required. Dual vents provide substantially better passive airflow than single-vent designs across the full 96 sq ft growing area.

Integrated Flush Base & Dual Rain Gutters

The flush base design provides a stable, level foundation platform and anchoring points for expansion kits. Dual rain gutters channel runoff cleanly away from the structure and can be directed to a collection barrel for water reuse in irrigation.

Expandable with 4′ Extension Kits

Optional 4-foot extension kits allow the growing footprint to expand as needs increase. The integrated base accepts extensions at either end without structural modification. Plan the initial siting to leave clearance for future expansion before anchoring.

7′6″ Peak Height — Full Standing Headroom

Comfortable headroom for tall gardeners across the entire interior footprint. The 7′6″ peak also provides the air volume needed for heat stratification — rising heat stays above the growing zone rather than accumulating at plant level.

Optional Accessories Available Separately

Shade cloths, watering systems, potting sinks, and shelving kits are available as optional accessories — allowing you to build out the interior to your specific growing method and workflow rather than receiving a pre-configured layout.

Base Model vs. Premium Package — Quick Comparison

Feature Base Model Premium Package
Frame & panels ✓ Identical ✓ Identical
10-year warranty ✓ Included ✓ Included
Automatic roof vents 2 vents 1 vent
Door hardware Patent-pending twist & lock Standard hinged
Workbenches Optional (sold separately) ✓ Included
Interior shade system Optional (sold separately) ✓ Included
Programmable watering Optional (sold separately) ✓ Included
Built-in sink Optional (sold separately) ✓ Included

Product Specifications

Dimensions 8′ W × 12′ L × 7′6″ H  (101″ × 149.75″ × 90″)
Growing Space 96 square feet
Frame U.S.-grade extruded aluminum — black electrostatic paint, 0% lead
Panels 8mm twin-wall polycarbonate — UV stable
Doors 4′ × 6′ hinged lockable double doors — patent-pending twist & lock bolts
Ventilation Two automatic roof vents, 2′ × 2′ each (no power required)
Base Integrated flush base design
Water Management Integrated dual rainwater gutter system
Expandability Optional 4′ extension kits available
Optional Accessories Shade cloths, watering systems, potting sinks, shelving kits — sold separately
Warranty 10 years on frame and panels — strongest in the industry
Country of Origin Made in the USA
What’s Included All hardware, illustrated assembly manual, screwdriver, wrench
Assembly Full weekend with two people — ground prep not included

Buyer’s Notes — What to Know Before You Order

Base vs. Premium: If you want a fully equipped growing environment out of the box, the MONT 8 × 12 Premium Package is the better choice. The base model gives you the same structure with a clean slate interior — configure it yourself with the accessories that fit your specific growing method.

Dual vents advantage: Two automatic roof vents provide meaningfully better passive ventilation than one, particularly in Southern California summers. If heat management is a priority for your growing environment, this is a genuine advantage of the base model over the Premium configuration.

Ground preparation: A level, stable surface is required before assembly. Concrete pad, gravel base, or pavers are standard choices — ground prep is not included in the kit and is the buyer’s responsibility.

Permits & expansion: Check local building codes before installation. If you plan to add extension kits in the future, site the greenhouse with clearance at one or both ends before anchoring — extensions are significantly easier to plan for before the structure is in the ground.

“The same structure, the same warranty, the same 10 years of growing confidence — configured exactly the way you want it.”

Trade & Commercial Orders

Available for commercial growers, landscape professionals & residential projects throughout Southern California.

Trade pricing, volume quotes, and white-glove delivery coordination available. Contact our team for lead times and project pricing.

Serving  •  Los Angeles  •  Orange County  •  Inland Empire  •  Ventura County
White-glove delivery available throughout Southern California

Ground preparation is the buyer’s responsibility and is not included in the kit. Optional accessories — shade cloths, watering systems, potting sinks, shelving kits — are sold separately. Check local building codes and permit requirements before installation. 10-year warranty covers frame and panels under normal outdoor use — contact MONT for full warranty terms and conditions. Extension kits sold separately. Also available: MONT 8′ × 12′ Premium Package and MONT 8′ × 8′ Premium Package.