Emerald Triangle GreenHouse – 30/35′ Wide Gothic Style
Emerald Triangle Greenhouse
The prized choice for licensed farmers, our 30 x 100 Emerald Triangle Greenhouse Package is available in 20, 40, and 80lb snowload variants. Featuring a gothic profile, this greenhouse is equipped with 2.38OD 13-gauge metal hoops, with 11ga metal utilized for snowloads exceeding 40lb. The spacing is configured at 5ft on center, incorporating (5) runs of 1.38OD 16-gauge purlins, all secured with premium aluminum cross connectors.
Gothic Profile Greenhouses (Best for High Snow Load & Heavy Rainfall)
The steep-pitched Gothic roof sheds snow and rain more effectively than other designs.
Snow Load Strength – Steep pitch prevents snow accumulation.
Rain Management – Quickly channels water away in heavy storms.
Extra Headroom – Increased center height for tall crops or equipment.
Durability in Harsh Climates – Ideal for cold, wet, or mountainous regions.
T3 Greenhouses
American-Made. Built for Growers. Engineered to Last.
At T3 Greenhouse Supply, we manufacture high-performance greenhouse kits for commercial agriculture, homesteading, licensed hemp cultivation, and backyard growing.
From 10×12 backyard greenhouses to 35-foot-wide commercial houses and full gutter-connect projects, every T3 structure is built from heavy-duty U.S.-made galvanized steel, engineered to last decades in the harshest climates. Our greenhouses are automation-ready and can run ventilation, irrigation, heating, cooling, and light deprivation systems— with optional off-grid solar power.
💪 T3 Greenhouses Outperform the Rest
🇺🇸 U.S.-Made Heavy-Duty Galvanized Steel – 2-3/8″ and 1-5/8″ structural tubing for maximum strength and longevity.
Optional Powder Coating – Adds style and enhanced corrosion resistance.
High-Performance Plastics – String-reinforced poly film for outer layers, 6 mil clear poly for double-inflation insulation.
Automation-Ready – Integrates with automated greenhouse controllers for precise climate management.
Off-Grid Capable – Solar power packages for farms, homesteads, and remote growing locations.
Custom Engineering – Wet-stamped plans available in all 50 states for agriculture and licensed cultivation facilities.
Automation & Off-Grid Options
Automating a year-round gothic-style greenhouse takes everything good about the design and supercharges it. With automated ventilation, evaporative cooling, heating, and smart controls, you have a setup that can thrive in blazing summers or freezing winters. With the right system, the internal climate adapts hour by hour—without you lifting a finger. These greenhouses are built for growers who want consistency and control without babysitting the thermostat. Whether you’re growing leafy greens in Montana or tropical plants in Texas, this style delivers stable growing conditions and peace of mind.
🌾 Built for Every Type of Grower
Commercial Agriculture – Vegetables, fruits, berries, flowers, herbs, nursery crops.
Specialty Crops – Hemp and other high-value plants.
Backyard & Homestead Growers – Year-round food, flowers, and personal crops.
Schools & Community Gardens – Educational, sustainable agriculture projects.
Light Deprivation Systems
Our Interior Light Dep Systems are engineered for hemp and photoperiod-sensitive crops:
Heavy-duty U.S. steel frames for structural strength.
Dual output motorized blackout curtains for smooth, reliable coverage.
Integrates with automated greenhouse controllers for timed cycles or manual operation.
Designed for precision light control to maximize yields.
Ventilation and Cooling Packages
UL-Listed Exhaust Fans – Sized to match your greenhouse:
36" Fans for 20- and 24-foot-wide models.
50" Fans for 30- and 35-foot-wide models.
20" HAF Fans – Provide maximum air throw to eliminate hot spots and strengthen stems.
Wet Wall Cooling Systems – Various sizes available; we recommend 4x20 wet walls for 30- and 35-foot-wide greenhouses.
Wet Wall Light Traps – Optional blackout covers for wet wall systems.
Heating Solutions
LB White 120 Plus & 220 Plus Heaters – High-efficiency heating designed specifically for greenhouses.
Available in outside end wall mount or interior mount configurations.
Perfect for year-round production in colder regions.
Greenhouse Plastics & Endwall Coverings
String-Reinforced Poly Film (10 mil) – Tough, tear-resistant greenhouse covering for long-term durability.
6 Mil Clear Poly Film – Used as the lower layer in double-inflation systems for added insulation.
Polycarbonate Endwalls – Long-lasting, rigid protection with excellent light transmission.
Polycarbonate + Metal Endwall Options – For added durability, security, and weather resistance.
Channel & Wiggle Wire Fastening – Aluminum channel with PVC-coated or galvanized wiggle wire for a secure, professional fit.
Solar Power Packages
Operate your greenhouse entirely off-grid.
Automation Options
Automated Greenhouse Controllers – Control ventilation, heating, irrigation, cooling, and light dep.
Irrigation & Misting Systems – Climate or timer-controlled for consistent plant health.
Remote Monitoring – Adjust systems from anywhere via your phone or computer.