Exterior end view of Nexus Vail glazed with 8mm Polygal. Installed on 2nd floor above block building. Note block stemwall and block corner for architectural impact.

One end of greenhouse is complete block wall except for door openings and for relief vent to release air when air conditioning is pumped into the structure.

Exterior side view of galvanized steel greenhouse glazed with twinwall Polygal. All heating and cooling by university central heat and air system.

View inside of greenhouse of concrete floor, plated posts on block stemwall with 8mm twinwall Polygal above stemwalls.

View of one slope of roof showing wide galvanized steel gutter. Aluminum ridge at peak of structure. Gasketed aluminum extrusions to attach 8mm Polygal roof panels. Note screws and oversized washers to point fasten roof panels at purlins to prevent "uplift".

For more information on this project or any others, please contact us at appas@americanplant.com or call 405-787-4833.

Greenhouse heated by Modine Hot Dawg unit heater hung overhead. Evaporative cooling by 4″ Koolcel pads mounted on one end with air inlet controlled by series of four Acme motorized shutters covering the pad system. Exhaust fan with exterior shutter on the opposite end to create managed air flow across the length of greenhouse. Two 12″ overhead HAF fans to provide air circulation within the greenhouse.

All equipment is controlled by a Link 4 iGrow digital staged controller to save energy and manage greenhouse heating, ventilation and cooling. Shade cloth to be added seasonally over the greenhouse as needed. This beautiful greenhouse will be used to support science class instruction and benches will be added as they progress.

National aluminum frame greenhouse glazed with clear tempered glass. Note roof vent with pads and fan.

Exterior view of exhaust fan endwall with glass entry door. Note Modine Hot Dawg heater.

Exterior view of pad and shutter endwall with Acme motorized aluminum shutters to provide inlet air to Koolcel evaporative cooling pad system mounted just inside shutters. Note black plastic sump tank with pump and valves to provide water flow to pad system.

Interior view of Koolcel evaporative pad cooling system. Note black plastic sump tank that houses pump for cooling system. Two HAF overhead air circulating fans and roof vent also visible on beautiful glass greenhouse.

Interior view of exhaust fan end of glass greenhouse showing glass entry door, motorized shutter fan and Modine Hot Dawg unit heater.

For more information on this greenhouse or any others, please contact us at appas@americanplant.com or call 405.787.4833.

APPAS School Greenhouse Kit – 21′ x 30′
- our most widely used base kit for school greenhouse projects; for information, pricing and options for your own school greenhouse project, please click here.

Academy With Community Partners
- Mesa, AZ

click here

Capitol Hill High School
- Oklahoma City, OK

click here

Centennial High School

- Oklahoma City, OK

click here

Cushing High School
- Cushing, OK

click here

*this is a variation of our school greenhouse kit package

Francis Tuttle Vo-Tech
- Oklahoma City, OK

click here

High Plains Technology Center
- Woodward, OK

click here

John Marshall High School
- Oklahoma City, OK

click here

North Little Rock High School
- Little Rock, Ark.

click here

Oklahoma Panhandle State University
- Guymon, OK

click here

Palo Duro High School
- Canyon, TX

click here

Rich Mountain Community College

- Mena, Ark.

click here

Sayre High School

- Sayre, OK

click here

*this is our school greenhouse kit package*

Tulsa Community College
-Tulsa, OK

click here

The frame is complete with one (1) ridge purlin and six (6) additional purlins to strengthen the house and support the polycarbonate structured sheet.
The School Greenhouse Package includes the following parts, equipment and glazing:

• CCA pressure treated 2′x8′ wood baseboard with installation hardware;
• All posts, hoops, end wind braces, heavy welded slip fittings, other fittings and nuts and bolts for assembly;
• Endwall framing for both fan and pad ends, complete with 3 endwall posts per end, not 2 posts as most other companies;
• Horizontal girts on 5′ or closer centers on the 2 endwalls;
• Metal support and framing for equipment;
• 8mm Solar Grade polycarbonate structured sheets for roof and sidewalls;
• 8mm Solar Grade polycarbonate structured sheets for endwalls;

Solar Grade is a co-extruded polycarbonate structured sheet which provides excellent diffused light transmission combined with the best insulation of any of the typically used greenhouse glazings. These properties combined with long life, fire resistance, high impact strength, resists hail, wind and vandalism damage, and excellent appearance, provide a glazing which is unsurpassed for school applications.

• Aluminum extrusions for attaching and joining the Polygal sheets to roof and sidewalls;
• Polycarbonate extrusions used on endwalls;
• Flashing or extrusion around door, vents, exhaust fan and at roof to endwall connections, with necessary screws, point fasteners, sealing profile for base of all sheets.

Heating and cooling equipment for the greenhouse is sized in accordance with the guidelines of the National Greenhouse Manufacturers Association and Acme Engineering for this greenhouse size and the Oklahoma climate. The heating system is sized to maintain 65 degrees Fahrenheit with a 20 mph wind at 5 degrees outside temperature.

The cooling system is designed to move enough evaporative cooled air through the greenhouse to maintain an environment that promotes plant growth. Shade cloth is a necessary option that reduces heat gain in the greenhouse if your program includes growing during the summertime.
Kit includes the following equipment:

• DCA36G two speed Acme Exhaust Fan in slantwall housing complete with inlet and outlet guard;
• Automatic shutter for ventilation;
• Fifteen (15) 3′ tall, 4″ thick Kool-Cel pads;
• Aluminum Distribution and Return System;
• Plumbing completer kit;
• Sump Pump;
• HD100 Modine Natural Gas Heater complete with double wall exhaust flue stack.

A standard 3′ wide welded aluminum door glazed with 8mm Polygal. The temperature is also automatically controlled with necessary relays and environmental thermostats.

The School Greenhouse Package provides 653 sq. ft. of growing space and comes complete with easy to follow step by step installation instructions. The base price excludes a sump tank (a required item), and equipment disconnect switches (a suggested item). No concrete, electrical or mechanical work is provided.

Our staff is available by phone or in person if necessary, to advise your installers and help them complete a successful and operational facility.
Base bid total does not include sales tax if applicable.
Freight collect from Oklahoma City.

BASE BID TOTAL………………….$23,562.88

OPTIONS

Option 1:

WAAC 33 MT MOTORIZED INLET SHUTTER
#55-333 & #55-115
Motorized inlet shutter with framing materials required for installation. The WAAC 3333 MT is very important for winter ventilation to operate properly with the low speed of the two-speed exhaust fan without causing plant stress and damage due to outside low temperature air being pulled in through the pad vent directly onto the plants in the greenhouse (highly encouraged option).
$259.11

Option 2:

ALARM W/ AUTOMATIC DIALER & THERMALARM TEMPERATURE SENSOR
#55-1101 & #55-1014
This unit is critical in notifying you if the pilot light or some other component malfunctions or to advise if the power is interrupted (highly encouraged option).
$665.50

Option 3:

30′X35′ POLYPROPYLENE 63% SHADE CLOTH
#51-3035
All edges taped and #2 grommets every 2′ on all sides. No support or tie down system is included (highly encouraged option).
$235.45

Option 4:

TWO (2) HAF FANS FOR AIR CIRCULATION
#55-VBG12
HAF fans are for set point ventilation to maintain air circulation around the plants at all times to improve plant growth and to prevent disease problems (highly encouraged option).
2 @ $156.40 each
$312.80

Option 5:

37 GALLON POLY SUMP TANK WITH LID
#55-10112
A sump tank is required for the Kool-Cel system to function (highly encouraged option).
$161.92

Option 6:

DISCONNECT SWITCH PACKAGE
The disconnect switch package includes the disconnect and speed selection switches recommended to help control the equipment as you wire up the equipment (highly encouraged option).
$184.00

Option 7:

12′ WIDE WOVEN BLACK POLYPROPYLENE GROUND COVER FABRIC
#57-712100
To be placed on ground before installing gravel floor. This fabric allows water to drain through fabric but it makes it hard for weeds to grow up through the floor. It is a great liner under gravel so your gravel doesn’t keep disappearing into the ground (highly recommended option).
$105.29

The following options are not as important-but available depending on you layout and use.

Option 8:

DOUBLE DOOR
The double door package includes materials necessary to convert to a 6′ wide door opening with two (2) 3′ wide doors. The double door option can be positioned on either side of the exhaust fan.
$850.00

Option 9:

BENCHES
Two (2) 3′ wide x 30′ long galvanized steel benches for the sides of the greenhouse and two (2) each 3′x24′ long galvanized steel benches for the middle of the greenhouse. This arrangement will provide an approximately 3′ wide center and end aisles with two (2) 2′ wide side aisles. Bench frames of these stationary benches will be made of galvanized steel with bench tops made of high grade black plastic grid panels.
$2316.60

Option 10:

PORTABLE STRUCTURED PLASTIC POLY BENCH TOPS AND LEGS
#53-430800
Fourteen (14) 3′x8′ structural plastic poly bench tops with 8 black PVC legs per bench for the total amount of
$1590.40
Support framing for these benches to be provided by customer.

DEDUCTIONS

Copolymer Greenhouse Film Covering:
Use copolymer film instead of polycarbonate structured sheet glazing. Copolymer is more subject to vandalism, wind and hail damage. Compared to the polycarbonate, copolymer has less insulation value, less usable light for the plants and copolymer must be replaced at least every four years. Copolymer has a lower initial cost, however cost over a ten-year period is often higher than the cost of the polycarbonate structured sheets when you include the periodic replacement cost of the film and labor.

CHANGE ROOF AND SIDES ONLY TO COPOLYMER:
Gables remain polycarbonate structured sheets. We will provide one (1) steel ridge purlin and two (2) pressure treated wood baseboards instead of the purlins in the base package. Two (2) layers of 6 mil thick high quality copolymer film with four-year level of ultraviolet inhibitor are provided to cover the roof and sides. Aluminum lock system to hold poly film will be provided for each of the baseboards and the end bows. An inflation kit is provided to inflate between the two layers.
DEDUCT $1780.00

ROOF ONLY TO COPOLYMER:
Sides and gables remain polycarbonate structured sheets. We will provide one (1) steel ridge purlin and two (2) pressure treated wood eave runners instead of the purlins in base package. Two (2) layers of 6 mil thick high quality copolymer film with four-year level of ultraviolet inhibitor are provided to cover the roof. Aluminum lock system to hold poly will be provided for each of the eave runners and the end bows. An inflation kit is provided to inflate between the two layers.
DEDUCT $756.00

Prices based on work within a 2-hour radius of Oklahoma City. Inquire for special pricing on jobs further from Oklahoma City.

BASE PACKAGE INSTALLATION:
By American Plant Products and Services – Installation of greenhouse structure, glazing and equipment not including electrical, plumbing, site work or flooring.
$8500.00 

BENCH OPTION INSTALLATION:
By American Plant Products and Services – Based on performing this work while installing the greenhouse.
$1000.00

GRAVEL FLOOR:
Three to four inches of washed and cleaned gravel spread over a polypropylene ground cover fabric weed barrier. (Leveling the ground or soil fill, if required, not included.) Based on performing this work while installing greenhouse.
Approximately $2100.00

ELECTRICAL AND PLUMBING:
Assuming availability of sufficient electric, gas and water are withing 50 feet of greenhouse site and easily accessible for electric and plumbing subcontractors. Electric estimated at $3500.00 and plumbing estimated at $2250.00
Approximately $5750.00