You save 1,830 (37%)
Estimated doorstep delivery by 21 Nov - 23 Nov from USA
Premium Cooling, Competitive Price
Noctua NF-A4x20 FLX is a premium 40x20mm fan engineered for high-performance cooling in electronics and network devices. Featuring advanced aerodynamic design with Flow Acceleration Channels and Noctua’s AAO frame, it delivers efficient airflow at ultra-low noise levels. The FLX version offers three speed settings (5000/4400/3700rpm) via Low-Noise Adaptors, allowing precise control for maximum airflow or near-silent operation. Its reference-class SSO2 bearing ensures smooth, durable performance, with an MTTF exceeding 150,000 hours. Suitable for 1U server racks, NAS, routers, switches, and DVRs, it includes anti-vibration mounts, screws, extension cable, and OmniJoin adaptor for easy connection to proprietary headers. Factory-sealed, imported from USA, with all duties included, it guarantees reliable, silent cooling for demanding applications in India.
Reviewers in humid Indian climates report steady operation with minimal noise, even in high-temperature environments. Its compact size fits well in tight spaces like server racks and NAS enclosures. The included accessories facilitate easy installation in various devices, ensuring long-lasting performance. With fast delivery in 11-13 days, this fan is a top choice for professionals and enthusiasts seeking premium cooling without noise disruption.
Order from CrowCrowCrow for authentic USA quality, with all duties and GST included. Ideal for Indian electronics, network, and storage setups requiring silent, reliable cooling solutions. Experience the difference with Noctua’s trusted engineering, delivered swiftly to your doorstep.
Advanced Aerodynamics & Premium Build
Noctua’s NF-A4x20 FLX features Flow Acceleration Channels and a specialized AAO frame, reducing turbulence and noise while boosting airflow. Its SSO2 bearing ensures smooth, durable operation, making it ideal for high-demand electronics in India’s hot climate.
Ideal for High-Performance, Quiet Cooling
Designed for 1U servers, NAS, routers, and DVRs, this fan offers three speed settings for customizable airflow. Perfect for Indian environments where silent, reliable cooling is essential, and noise pollution is a concern.
Typical situations where Noctua NF-A4x20 FLX High-Performance Quiet Fan 40mm | Ultra-Quiet helps — illustrative scenarios, not customer reviews.
A Mumbai-based data center technician needs silent cooling for high-density servers operating in humid climate, ensuring minimal noise disturbance and reliable long-term operation.
The Noctua NF-A4x20 FLX provides quiet, efficient airflow with adjustable speeds, lasting over 150,000 hours, delivered in 11-13 days.
| Recommended Use | Cooling in PCs, NAS, routers, switches, DVRs |
| Revolutions per Minute | 5000/4400/3700 rpm |
| Size / Pack | 40mm x 20mm |
| Cost per use | ₹3,090 per fan |
| Shelf life after opening | N/A |
| Reapplication math | N/A |
| Contraindications | None |
| Allergens / Irritants | None |
CrowCrowCrow helps you bring this product to India. Any warranty is offered by Noctuaunder its own policy.
| Feature | Noctua NF-A4x20 FLX | Others |
|---|---|---|
| Size & Compatibility | 40x20mm, fits most PC, NAS, DVR, routers | Common Indian fans are 40x20mm but may lack advanced aerodynamics |
| Noise Level | 14.9dB(A), ultra-quiet | Indian fans often range 20-25dB, noisier in high-temperature environments |
| Speed Settings | Three speeds: 3700/4400/5000rpm | Most Indian fans have fixed speeds, less control |
| Durability & MTTF | Over 150,000 hours | Indian fans typically last 30,000-50,000 hours |
| Price & Value | ₹4,920 USD, with premium build | ₹300-₹500 for similar size, lower quality materials |
| SKU | eac2818 |
| GTIN | 09010018100112 |
| Brand | Noctua |
| Size | 40x20mm |
| Voltage | 12V |
| Material | Fibre-glass reinforced PBT |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
About Noctua
Noctua is a globally trusted brand known for premium, silent cooling solutions with over 15 years of innovation in thermal management.
Compliance & Legal
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This item:
Noctua NF-A4x20 FLX High-Performance Quiet Fan 40mm | Ultra-Quiet, 3-Speed, 14.9dB(A)
3,090
This item
Noctua NF-A4x20 FLX High-Performance Quiet Fan 40mm | Ultra-Quiet, 3-Speed, 14.9dB(A)
3,090
Total price:
9,630
You save 3,640 (27%) Extra3 items selected
3 items
9,630You save 3,640 (27%) Extra
| Attributes |  |  |  |  | |||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 3,090 4,920 | 3,830 5,430 | 2,710 2,920 | 6,580 6,800 | 4,840 7,300 | 4,070 5,940 | 11,090 13,870 |
| Brand Name | Noctua | Corsair | Corsair | Corsair | Corsair | tutata | TORRAS |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
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