Double L Group, LLC is a leading U.S.-based manufacturer and exporter of agricultural ventilation and flooring systems. Headquartered in Dyersville, Iowa, Double L specializes in engineering high-performance environmental systems for poultry, swine, and dairy production, catering to both retrofit and new construction markets across North America and globally.
Company Background
Founded in the late 1970s, Double L Group has grown into a trusted partner for livestock and poultry producers by focusing on air quality, animal comfort, and farm efficiency. Led by Trinity Persful, the company blends engineering precision with agricultural know-how, supporting farms with durable and high-efficiency equipment tailored to various livestock sectors.
Core Product Portfolio
Double L Group manufactures a comprehensive range of climate control and flooring solutions, including:
-
Broiler Equipment
- Ceiling Inlets
- Wall Inlets
- Flooring
- PVC Shutters
- Stir Fans
- Tunnel Doors
- Evaporative Cooling Systems
-
Swine Equipment
- Ceiling and Wall Air Inlets
- Ductwork
- PVC Shutters
- Ventilation Fans
- Durable Swine Flooring
- Retrofitting Equipment for Existing Hog Buildings
-
Layer Equipment
- Tunnel Vents (EcoTight Endwall & Sidewall Rack and Pinion)
- Ceiling Inlets
- Stir Fans and Layer Hoods
- Shutters and Accessories
-
Dairy Equipment
- High-volume Fans
- Evaporative Cooling Systems
- Ventilation Inlets and Shutters
These systems are engineered to ensure consistent airflow, reduce animal stress, and enhance productivity through efficient environmental control.
Specialization and Unique Selling Points
- Retrofit Expertise: Specialized in upgrading legacy farm buildings with energy-efficient, high-performance equipment.
- Durable Design: Products are built from corrosion-resistant materials for long-lasting service life under harsh farm conditions.
- Complete Solutions: End-to-end offerings from ventilation to cooling and flooring across multiple livestock sectors.
- U.S. Manufacturing: All products are made in the USA, ensuring reliable quality and fast logistics across North America.
Financial and Export Insights
While specific financial disclosures are not public, Double L Group maintains strong export records, with over 1,200 international shipments from 2020 to 2024 based on data from ImportYeti and Volza. Key markets include:
- Latin America: Mexico, Brazil, Chile
- Asia-Pacific: Philippines, Vietnam, South Korea
- Europe: Spain, Poland, Ukraine
Product categories such as tunnel vents, ceiling inlets, and flooring systems dominate their international sales.
Target Market
- Broiler and Layer Poultry Integrators
- Commercial Swine Producers and Contractors
- Dairy Cattle Operations
- Agricultural Equipment Distributors
- Retrofit and Construction Contractors
Capabilities and Infrastructure
- In-house Design and Manufacturing based in Iowa
- Custom Engineering Services for farm-specific solutions
- Rapid Fulfillment Network for North American markets
- Technical Documentation and Multilingual Support
Certifications and Compliance
- All equipment conforms to ASHRAE and ANSI/ASABE agricultural engineering standards
- Designed for compliance with U.S. Environmental Quality Incentive Program (EQIP) ventilation requirements
- Built using FDA-approved and NSF-rated plastics and coatings for animal safety
Testimonials
“Double L's ceiling inlets transformed our airflow system and improved our broiler uniformity scores by 15% in just two cycles.”
— Poultry Farm Manager, Arkansas
“Their retrofitting solutions helped us meet new ventilation standards while extending the life of our swine barns.”
— Swine Integrator, North Carolina
Achievements
- Developed EcoTight Tunnel Vents, now an industry benchmark for energy-efficient air control
- Recognized as a Top AgTech Manufacturer in 2023 by AgriBuilder Magazine
- Presented at major agricultural expos like IPPE Atlanta, World Pork Expo, and Midwest Poultry Federation Convention
