The J&D Manufacturing 72" Mega Storm II Exhaust Fan is engineered for exceptional airflow performance and energy efficiency in large-scale barn ventilation systems. Built with a UV-resistant smooth-molded fiberglass housing, a reinforced triangle X-frame, and twin AX85 heavy-duty belts, the Mega Storm II delivers high-volume airflow up to 47,330 CFM at 0.10" static pressure. Available in high-performance and high-efficiency models with or without a performance-boosting cone, it's the go-to choice for dairy, poultry, and livestock operations demanding reliable, low-maintenance ventilation.
Features & Benefits
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Reinforced Triangle X-Frame: Improved triangle X-frame design delivers greater structural strength and long-term durability compared to standard frame configurations.
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Thick UV-Resistant Fiberglass Housing: Smooth-molded fiberglass resists chipping and corrosion far better than competitive models, ensuring reliable performance in harsh agricultural environments.
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Twin Belt Drive System: Twin AX85 heavy-duty industrial notched belts are easily accessible and require no tools for replacement - swap belts in seconds.
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High-Performance & High-Efficiency Models: Choose the model that best fits your operation - up to 47,330 CFM for maximum airflow or over 21 CFM/Watt for maximum energy savings.
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Optional Performance-Boosting Cone: Available with or without a cone to optimize airflow projection for your facility layout.
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Drainage Holes: Bottom housing drainage holes prevent moisture buildup, maintaining performance in wet or high-humidity environments.
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VFD Compatible (3-Phase Models): Three-phase models support Variable Frequency Drive operation for variable speed control and energy savings.
Technical Specifications
| Part # |
HP |
Volts |
Amps |
Phase |
RPM |
Cone |
CFM @ 0" SP |
CFM @ 0.05" SP |
CFM @ 0.10" SP |
CFM @ 0.15" SP |
CFM @ 0.20" SP |
FEI @ 0.10" |
VFD Compatible |
| VMA72A5C33 |
3 |
230/460 |
9/4.5 |
3 |
299 |
Yes |
45,173 |
42,594 |
39,270 |
35,419 |
30,622 |
2.35 |
Yes w/VFD |
| VMA72A5C33-E |
3 |
230/460 |
8.4/4.2 |
3 |
298 |
Yes |
45,921 |
43,213 |
40,121 |
36,484 |
30,779 |
2.43 |
Yes w/VFD |
| VMA72A5C33-H |
3 |
230/460 |
8.4/4.2 |
3 |
342 |
Yes |
51,865 |
49,961 |
47,330 |
44,214 |
41,308 |
1.93 |
Yes w/VFD |
