Heavy-Duty Commercial Greenhouse Kits
Engineered in California. Galvanized steel construction. Sizes 20′ to 35′ wide.
T3 Greenhouse Supply manufactures commercial greenhouse kits engineered for serious production operations. As a direct commercial greenhouse manufacturer, we build heavy duty commercial greenhouses for growers nationwide — from small commercial greenhouses for first-time operators to large commercial greenhouses for industrial-scale farms. Every structure is fabricated in-house at our Shasta Lake, California shop using U.S.-made heavy duty greenhouse frames and galvanized steel greenhouse construction. Our professional greenhouses handle the real weather you grow in — high winds, heavy snow, and harsh conditions across every climate zone. Every commercial greenhouse for sale on this page ships automation ready for ventilation, irrigation, light deprivation, and climate control integration.
Choose from four commercial profiles
LIGHT DEPRIVATION GREENHOUSES, ZERO LABOR.
T3's light deprivation greenhouses give commercial growers total control over photoperiod. Automated blackout systems are built into every commercial greenhouse kit — no retrofits, no daily labor, no light leaks.
THE ONLY 20×100 LIGHT DEP GREENHOUSE
No other manufacturer builds light deprivation in this footprint.
Featured Project: Allegany County, NY
T3 recently completed 14 internal light-deprivation greenhouses in Allegany County, New York – a three-year
project that created jobs for local contractors, electricians, plumbers, and building crews across the region. Up
next: 10 internal 30×100 greenhouses in Bridgeton, New Jersey.
"In the five years since I started this company, this stands out as one of our greatest accomplishments."
Thomas Rawlings
Founder of T3
🏆 Greenhouse Models & Solutions
🌾 Commercial Agricultural Greenhouses
Designed for produce farms and commercial growers seeking to extend growing seasons, improve yield consistency, and protect crops in a controlled environment. These greenhouses support automation, climate control, and scalable production.
💨 High-Performance and Specialty Crop Greenhouses
Engineered for advanced environmental control and precise daylight management. These systems are ideal for growers focused on optimized flowering cycles, repeat harvests, and predictable production schedules.
🏡 Backyard and Residential Greenhouses
Compact greenhouse solutions designed for home growers and homesteaders focused on sustainable food production. Our 10×12 Bloombox greenhouse offers a space-efficient footprint with automation-ready features that bring professional-level control to residential growing.
⚡ Solar-Integrated and Off-Grid Greenhouses
Greenhouse systems designed to operate with solar power and low-energy automation. These solutions are ideal for remote locations or growers focused on energy independence and long-term sustainability.
Our Project Lifecycle
01 Consultation
Define your crop, climate zone, and production goals with a T3 specialist.
02 Engineering & Design
Custom-engineered drawings tailored to your site's wind, snow, and operational requirements.
03 Fabrication
Built in-house at our Shasta Lake, California shop using U.S.-made galvanized steel.
04 Logistics
Nationwide shipping with secure crating and on-site material coordination.
05 Installation
Expert assembly and system integration by T3's commercial build team.
06 Handover
Full operational training, automation setup, and ongoing technical support.
Heavy-Duty Steel Construction Built to Last
Every T3 commercial greenhouse is built with U.S.-made galvanized steel — the same material standards used in commercial construction. We don't cut corners on tubing gauge, fastener quality, or coatings. Your greenhouse frame is the part you can't replace easily, so we build it like the foundation it is.
Key Materials Specs:
- U.S.-made galvanized steel — sourced domestically, never imported
- 2-3/8" round main structural tubing (heavy-wall, not light-gauge)
- 1-5/8" round secondary framing for purlins and braces
- Hot-dip galvanized coating for rust resistance and decades of service life
- Engineered for commercial-grade wind and snow loads in your region
2-3/8"
Round Main
Tubing OD
HOT-DIP
Galvanized
Coating
100%
U.S.-Sourced
Steel
COMMERCIAL
Grade Snow & Wind Loads
Why T3 Commercial Greenhouses Pay for Themselves
Every T3 greenhouse is engineered to reduce operating costs, increase production efficiency, and deliver long-term ROI for serious commercial growers.
Commercial greenhouse kits cut power bills compared to indoor facilities.
Heavy duty commercial greenhouses with built-in climate control and light deprivation.
Professional greenhouses engineered for wind, frost, and weather extremes.
Every steel frame greenhouse uses U.S.-made tubing built for decades of commercial use.
Automation-ready commercial greenhouse kits with full integration support.
Lower upfront costs, lower operating costs, full commercial-grade performance.