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Riverstone Ind. (RSI)

Riverstone 12ft x 18ft Whitney Educational Greenhouse Kit

Riverstone 12ft x 18ft Whitney Educational Greenhouse Kit

4.9/5 · 147 verified reviews

A complete, commercial-grade 12x18 educational greenhouse for school horticulture programs, institutions and serious gardeners.

Price available by quote. This educational greenhouse is quoted to order for schools, institutions and growers. Fill out the short form below and our team will send you a detailed quote, usually within 1 business day.

Ask for a Quote

Prefer to talk? Call 678-408-8222 (Mon to Sat, 9 AM to 6 PM). Quotes are based on current manufacturer pricing, which can change.

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Growers Edition
★★★★★
“Greenhouse quality is superb and the customer service is outstanding. Thank you to Mulberry Greenhouses!”
Tea C. · Verified buyer Read all 147 reviews →
  • Complete package: heater, fan, shutters, benches, watering, shade cloth
  • 2" x 2" galvanized steel frame with pre-welded stanchions
  • 8' side walls and an 11.5' peak for good airflow
  • Lockable 42" ADA French glass security door
  • Stamped and sealed drawings included for permitting
  • Made in the USA, 10-year warranty on walls and roof
  • 100% free shipping
  • Authorized retailer
  • No sales tax (except georgia)
  • Price match guarantee
Questions before you buy? Talk to a greenhouse specialist: 678-408-8222 or Info@mulberrygreenhouses.com
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Product Description

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Riverstone Industries 12ft x 18ft Whitney Educational Greenhouse Kit

The Whitney Educational Greenhouse Package is designed for schools with horticulture programs, correctional institutions, and serious gardeners for both growing and therapeutic reasons. The 2” x 2” galvanized steel frame with pre-welded stanchions and Commercial graded 8mm twin wall corrugated covering (walls and roof) are the same specifications used in commercial products in the market today. The walls and roof are warranteed for 10 years and have a 15-20 year life expectancy.

The walls of the Whitney are 8 ft. tall with a center peak of 11.5 ft. for optimal air circulation.

The design of Educational greenhouses requires attention to details that are different from that of hobby or commercial greenhouses. The design differences include the ability to accommodate large numbers of people (students) and allow them to become a part of the growing process, secure environment that can be locked when not in use, built to last construction that will provide many years of use, all within a climate controlled environment that is thermostatically controlled.

Our factory is a leader in providing functional, affordable greenhouses to schools and universities. Our educational line of greenhouses has been refined over the years and our offering is the most comprehensive in the market today. We have designed our Greenhouses as complete package that include all the accessories that a School, institution, or serious gardener would need.

The Snow Load on this RSI Educational Greenhouse is standard at 10 lbs/ sqft. The wind load is designed for 90 mph. The Educational Greenhouses are customizable and can be made to meet any local ordinances required to gain permitting. This is the responsibility of the purchaser to notify your retailer as to the requirements PRIOR to ordering as there might be additional costs associated if local requirements vary. 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 is not responsible for building a greenhouse that does not meet local ordinances from the building department. Please reach out to Riverstone with any questions. All our Educational Greenhouses come with a full assembly manual and our team is here to walk you through all steps of in the construction process as needed.

Features and Specifications of the Riverstone Industries 12ft x 18ft Whitney Educational Greenhouse Kit

  •  🌳   Dimensions: 12ft. (wide) x 18ft (deep) x 8ft (side walls) total height of 11.5ft (peak)
  • 🌳   Weight: 1809lbs
  • 🌳   Color: Metalic
  • 🌳   Material: steel/ polycarbonate
  • 🌳   8mm twin wall polycarbonate end walls, side walls and roof
  • 🌳   2 in x 2 in galvanized base rail and framing system.
  • 🌳    French glass entry security steel door with lockset. 42 in. wide x 84 in. high ADA ¾ inch thick.
  • 🌳   Two 24 in motorized shutters for air circulation
  • 🌳   One 18 in. Quietaire Industrial Exhaust Fan
  • 🌳   Two 3 ft. deep x 18 ft. long commercial work benches- attached to the frame
  • 🌳   One Two stage commercial thermostat to control fan & shutters
  • 🌳   One 240 volt electric heater with built in thermostat
  • 🌳   One 22 ft. x 20 ft. (63%) shade cloth with tie down rope
  • 🌳   One automatic and programmable watering system with timer. 
  • 🌳   Stamped and Sealed Drawings included in cost.
  • 🌳   Snow Load on this RSI Educational Greenhouse is standard at 10 lbs/ sqft. 
  • 🌳   The wind load is designed for 90 mph
  • 🌳   Number of doors: 1
  • 🌳   Number of vents: 2
  • 🌳   10 Year Warranty

Proudly made in the USA



Upgrading to Growers Edition:

In addition to all the previous features, the Growers Edition upgrade includes the following:

🌳   Unique and Upgraded 8mm twill wall polycarbonate with the light diffusing feature. This allows more light to be captured and used in the growing process, saving energy needed for a lighting system. A lighting system will still be required for certain crops that require up to 18 hours of light a day.  

Our line is comprehensive in nature. We offer our customers the ability to choose from 10 sizes and designs for your specific needs. We understand the process and have simplified it for the consumer in complete package format at a budget price for a quality greenhouse.

THIS GREENHOUSE IS COMMERCIAL IN NATURE THAT IS DELIVERED ON A COMMERCIAL TRUCK AND WILL NEED TO BE UNLOADED AND ASSEMBLED BY PROFESSIONALS. THIS IS NOT A DIY PROJECT GREENHOUSE. THE GREENHOUSE REQUIRES A WATER LINE AND ELECTRICAL LINE TO FUNCTION CORRECTLY. THERE ARE NO RETURNS ON THIS PRODUCT ONCE ORDERED. PLEASE CALL US TO ANSWER ALL YOU QUESTIONS PRIOR TO YOUR PURCHASE AND WATCH OUR FEATURES VIDEO THAT GOES THROUGH THE FEATURES OF THIS GREENHOUSE.

 

  • 216 sq ft (12' x 18') Floor area
  • 12' W x 18' D x 11.5' H at the peak Exterior size
  • 2" x 2" galvanized steel with pre-welded stanchions and galvanized base rail Frame
  • 8 mm twin-wall corrugated polycarbonate on end walls, side walls and roof Glazing
  • 90 mph Wind load
  • 10 years on walls and roof (15 to 20 year life expectancy) Warranty

Riverstone Ind. (RSI) · Hobby Greenhouse

Overview

The Whitney is a complete educational greenhouse package for schools with horticulture programs, correctional institutions and serious gardeners. It is built to the same specifications as commercial greenhouses: a 2" x 2" galvanized steel frame with pre-welded stanchions, covered in commercial-grade 8 mm twin-wall polycarbonate. The walls and roof carry a 10-year warranty and have a 15 to 20 year life expectancy.

Educational greenhouses have different needs than hobby or commercial ones. They have to hold groups of students who take part in the growing, lock securely when not in use, and keep a steady, thermostatically controlled climate. The Whitney comes with everything for that: a two-stage commercial thermostat running one Quietaire 18" industrial exhaust fan and two motorized shutters, a 240-volt electric heater, two work benches, an automatic watering system and a 63% shade cloth.

The side walls are 8' tall with an 11.5' center peak for good air circulation. The standard snow load is 10 lbs per sq ft and the wind load is 90 mph, and the greenhouse can be customized to meet local ordinances. Stamped and sealed drawings are included.

Our tip: This is not a DIY kit. It arrives on a commercial truck, needs professionals to unload and assemble it, and needs a water line and an electrical line. Share your local permit requirements with us before you order, since meeting them can change the cost.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 2 of 11

Why customers choose it

Built for classrooms and serious growers

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 8 of 11

Commercial-grade structure

A 2" x 2" galvanized steel frame with pre-welded stanchions and 8 mm twin-wall polycarbonate, the same specs used in commercial greenhouses.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 3 of 11

Secure, accessible entry

The 42" x 84" ADA French glass security steel door has a lockset, so the greenhouse can be locked when not in use.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 5 of 11

Automatic climate control

A two-stage commercial thermostat runs the exhaust fan and two 24" motorized shutters, and a 240-volt electric heater keeps it warm.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 4 of 11

Room for a class to work

Two commercial work benches, 3' deep x 18' long, attach to the frame.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 9 of 11

Watering and shade included

An automatic, programmable watering system with timer and a 22' x 20' 63% shade cloth come with the package.

Riverstone 12x18 ft Whitney Educational Greenhouse Kit – photo 10 of 11

Permit-ready drawings

Stamped and sealed drawings are included, and the greenhouse can be customized to meet local ordinances.

The details

Specifications

Size

Floor area 216 sq ft (12' x 18')
Exterior size 12' W x 18' D x 11.5' H at the peak
Walking height 8' at the side walls, 11.5' at the peak
Weight 1,809 lbs

Structure

Frame 2" x 2" galvanized steel with pre-welded stanchions and galvanized base rail
Glazing 8 mm twin-wall corrugated polycarbonate on end walls, side walls and roof
Snow load 10 lbs/sq ft (standard)
Wind load 90 mph
Color Metallic
Made in USA, by Riverstone Industries

Doors and climate control

Door One French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset
Vents Two 24" motorized shutters
Exhaust fan One Quietaire 18" industrial exhaust fan
Thermostat Two-stage commercial thermostat controls the fan and shutters
Heater 240-volt electric heater with built-in thermostat

Growing equipment

Benches Two commercial work benches, 3' deep x 18' long, attached to the frame
Shade cloth 22' x 20', 63%, with tie-down rope
Watering Automatic, programmable watering system with timer

Installation and warranty

Installation Delivered by commercial truck; professional unloading and assembly required
Utilities Requires a water line and an electrical line
Drawings Stamped and sealed drawings included
Warranty 10 years on walls and roof (15 to 20 year life expectancy)

Find the right fit

Compare sizes

ModelFloor areaExterior sizeWalking heightDoorPrice from Link
Riverstone 12ft x 18ft Whitney Educational Greenhouse Kit Viewing216 sq ft (12' x 18')12' W x 18' D x 11.5' H at the peak8' at the side walls, 11.5' at the peakOne French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset$32,000
Riverstone 12ft x 24ft Whitney Educational Greenhouse Kit 288 sq ft (12' x 24')12' W x 24' D x 11.5' H at the peak8' at the side walls, 11.5' at the peakOne French glass security steel entry door, 42" W x 84" H, ADA, 3/4" thick, with lockset$34,000 View

Free curbside freight delivery

How delivery works

  1. 1

    You place your order

    Choose your size, color and options. Your greenhouse ships from the manufacturer's warehouse, packed for freight.

  2. 2

    We call to schedule

    We'll contact you to set up a delivery time frame that works for you.

  3. 3

    Free curbside freight

    Delivery is by LTL motor freight on an 18-wheeler. Let us know about tight roads or low wires so we can plan ahead.

  4. 4

    Receive and unload

    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

Frequently asked questions

Can't find your answer? Our greenhouse specialists are happy to help you choose.

678-408-8222 Email us
Can I assemble this greenhouse myself?
No. This is a commercial greenhouse that is delivered on a commercial truck and needs to be unloaded and assembled by professionals. It comes with a full assembly manual, and Riverstone's team can walk you through every step of construction as needed.
What utilities does it need?
The greenhouse requires a water line and an electrical line to work correctly.
Will it meet my local building codes?
The educational greenhouses can be customized to meet local ordinances for permitting. Let us know your local requirements before you order, since meeting them may add cost. Stamped and sealed drawings based on your municipality's requirements are included; you supply and confirm those requirements.
What does the Growers Edition upgrade add?
It upgrades the covering to 8 mm twin-wall polycarbonate with a light-diffusing feature. More light is captured and used for growing, which saves energy on lighting, although crops that need up to 18 hours of light a day will still need a lighting system.
What snow and wind loads is it built for?
The standard snow load is 10 lbs per sq ft, and the wind load is designed for 90 mph. Talk to us before ordering if your area requires more.
Can I return it?
No. There are no returns on this greenhouse once it is ordered, so please call us with any questions before you buy.
Is shipping really free?

Yes. 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.

Do you offer a price match?

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.

Are you an authorized retailer?

Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.