Free Air Series 4000


The trusses, purlins and gutters in the Free Air Series 4000 Greenhouse features Superior strength ROLL-FORM steel for unmatched structural integrity. ROLL-FORM sections direct more strength to the longer axis of the metal. Conley's use of COLD FORMING procedures protect the metal's galvanizing features.

Condensate Control

Conley's Free Air Series include Anti-Condensate control features built directly into the frame. ROLL-FORM mills allow Conley's the ability to form channels into ROLL-FORMED sections to intercept and remove condensate that is naturally generated within the greenhouse. This feature is essential in helping promote a longer life in the structure and covering.


Conley’s continuous coil process allows you to access sections of steel as long as necessary to fit your unique needs. Incorporating continuous coils of pre-galvanized metal, ROLL-FORM mills incur virtually no material waste and can generate sections of steel as long as necessary. This means that Conley’s can form wider houses out of a single piece of steel versus some manufacturers who are forced to “splice” their trusses together.

Structure Questions?
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Installation Guides
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Sawtooth structural profile to feature built-in natural ventilation.
Superior strength ROLL-FORM truss, purlins and gutters insure unmatched structural integrity.
Available with extended columns for overhead retractable shade system.
Certified to meet International Building Codes.
Engineered to meet a standard 12 LB live load at 85 mph or 110 mph wind per the International Building Code (IBC).
Built-In Anti-Condesate Control Features.
Components are shipped pre-punched and cut to length simplifying the installation.
Rollformed components nest one onto the other, during shipment, substantially reducing freight rates.

For further assistance, feel free to contact our technical support team via email or call us toll free at 1-800-377-8441.

Below are several options and upgrades available for Conley's Free Air Series 4000 Greenhouse:

Conley's sidewall and/or endwall vents to naturally ventilate the greenhouse
Automated overhead retractable shade systems
Swing doors, single/double sliding doors, roll-up doors
Circulation fans, high effieciency fog systems and evaporative cooling systems
Internal retractable shade/heat retention system
Rigid covering for roof, sidewalls and endwalls
Space heater units, hot water systems or radiant heat systems
Conley's benching systems
Environmental control systems
Aluminum endwall flashing with hardware

For further assistance, feel free to contact our technical support team via email or call us toll free at 1-800-377-8441.

The following step-by-step guides have been expertly designed to help you easily build and install our products.

Click on each category below to preview the corresponding installation guide. Call or email us with your order number to receive the full-length versions.

For additional help, feel free to contact our technical support team via email or call us toll free at 1-800-377-8441.



Some key characteristics featured in the Free Air Series are compared below

Type of Roof
Engineered Widths
Column Spacing
Gutter Heights
Free Air 4000Sawtooth24', 30'12'8', 10', 12', 14'
Free Air 5000Arched Sawtooth24', 30'12'8', 10', 12', 14'
Free Air 5300Arched SawtoothTBDTBDTBD