Products
HVLS Fans
Industrial high-volume, low-speed ceiling fans
PMSM HVLS Fans
Permanent-magnet gearless direct-drive systems
Evaporative Air Coolers
Industrial fresh-air cooling and positive pressure
Portable Evaporative Air Coolers
Heavy-duty mobile spot cooling equipment
Fan & Cooler Solutions
Integrated HVLS fan and air cooler combo
Accessories & Controls
VFD controllers, group panels and mounting kits
Applications
Warehouses & Distribution
High racking and loading dock air movement
Manufacturing Facilities
Thermal heat dispersal and worker comfort
Gyms & Sports Facilities
Quiet air circulation for athletic courts
Workshops & Garages
Spot ventilation and positive pressure relief
Retail Stores & Showrooms
Draft-free comfortable customer airflow
Agricultural Buildings
Greenhouses and livestock heat mitigation
Exhibition & Event Spaces
Large open hall temporary & permanent cooling
Solutions
Large-Space Cooling
Engineered airflow design for large facilities
Industrial Ventilation
Continuous fresh-air exchange systems
Energy-Efficient Cooling
Low-power mechanical cooling alternatives
OEM / ODM Solutions
Custom motor, blade and control manufacturing
Fan & Cooler Solutions
Combined cooling and circulation solution
Resources
Buying Guides
Sizing guides and equipment selection advice
Technical Articles
Engineering insights, aerodynamics and motors
Case Studies
Verified international installation references
FAQ
Frequently asked questions and technical answers
Certifications
CE, ISO9001 and international safety standards
Downloads
Catalogs, technical manuals and specification sheets
Company
About RTFANS
Kool Air International brand history since 2003
Manufacturing
Production lines, balancing tests and facility scale
Quality Control
100% full-load inspection and safety protocols
Global Export
Serving 81 countries and regions across 4 continents
Our Team
Technical sales engineers and application specialists
Contact
Request a Quote
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HVLS Fans
Charm II Series
Charm II Series industrial HVLS fans.
RTF-DF-5E-2EX
Export model · specifications require source verification
RTF-DF-6E-2EX
Export model · specifications require source verification
RTF-DF-7E-2EX
Export model · specifications require source verification
