The J&D Manufacturing 72" Mega Direct Drive Exhaust Fan sets a new standard in large-scale barn ventilation performance and reliability. Powered by a 4.0 kW IP66-rated permanent magnet direct-drive motor with an integrated variable-speed driver, this fan delivers up to 64,057 CFM - among the highest outputs available in any barn exhaust fan - with no belts, pulleys, bearings, or tensioners to service. Available in galvanized or poly propeller configurations, the Mega Direct Drive is purpose-built for dairy, poultry, livestock, greenhouse, and industrial operations where maximum airflow and minimal maintenance are non-negotiable.
Features & Benefits
Permanent Magnet Direct-Drive Motor - Zero Maintenance: Eliminates belts, pulleys, bearings, tensioners, and greasing - reducing scheduled maintenance and virtually eliminating drivetrain failures.
IP66-Rated Totally Enclosed Motor: Fully sealed against dust and water ingress for maximum reliability in the harshest agricultural environments.
Integrated Variable Speed Driver: Onboard driver enables precise airflow control without a separate VFD, simplifying installation and reducing component cost.
Soft Start: Gradual motor ramp-up on each start reduces mechanical stress and extends fan life.
Galvanized or Poly Propeller Options: Choose the prop material that best suits your application and corrosion resistance requirements.
UV-Resistant Fiberglass Housing & Cone: Smooth molded exterior resists UV degradation and is easy to clean for low ongoing maintenance.
High Performance & High Efficiency Models: Standard model delivers up to 64,057 CFM; HE model exceeds 23 CFM/Watt for maximum energy savings.
Backed by a 2-Year Warranty: J&D's industry-standard warranty on all Mega Direct Drive fans.
Technical Specifications
Part #
Motor
Volts
Amps
Phase
RPM
Prop
CFM @ 0" SP
CFM @ 0.05" SP
CFM @ 0.10" SP
CFM @ 0.15" SP
CFM @ 0.20" SP
FEI @ 0.10"
VMDA72G3C43C
4.0 kW PM-DD
460
6.15
3
450
Galvanized
64,057
61,269
58,368
54,955
50,969
1.75
VMDA72G3C43C-HE
4.0 kW PM-DD
460
6.15
3
450
Galvanized
54,987
52,784
50,084
46,850
43,519
2.28
VMDA72P5C43C
4.0 kW PM-DD
460
6.15
3
450
Poly
59,594
57,603
55,505
53,460
51,268
1.75
Showing details for 50,084 CFM - Galvanized Prop, High Efficiency. Choose another option above to see its specs.
Specifications
Duct / Fan Size
72 in.
Product Details
Brand
J&D Manufacturing
SKU
VMDA72G3C43C-HE
Weight
85.0 lb
Dimensions (L × W × H)
72 × 72 × 36 in.
Shipping
Lead Time
Ships in 10-14 business days
Shipping Method
Freight (LTL) delivery
Product Documents 3
For 50,084 CFM - Galvanized Prop, High Efficiency. Choose another option above for its documents.
