Cooler Master MFL-B2DN-21NP2-R2

Overview

The Cooler Master MFL-B2DN-21NP2-R2 is a 120 mm case fan designed to provide efficient cooling for your PC while enhancing its visual appeal with customizable ARGB lighting. It operates at speeds up to 2050 RPM, delivering an airflow of 51.88 CFM to maintain optimal temperatures during intensive tasks such as gaming or content creation. The fan’s rifle bearing ensures smooth rotation and long-lasting durability, making it a reliable component for any build.

With PWM control, you can adjust the fan speed to balance cooling performance and noise levels, which remain low at 27 dBA even at full speed. The hybrid frame combined with Air Balance blades improves airflow stability and efficiency, helping your system stay cool without sacrificing style.

Key features

• 120 mm fan size optimized for effective airflow in various PC cases
• Fan speed up to 2050 RPM to provide strong cooling power when needed
• Quiet operation at 27 dBA, minimizing distractions during work or play
• Customizable ARGB lighting on both fan blades and outer ring for personalized aesthetics
• Durable rifle bearing designed for smooth rotation and extended lifespan
• PWM control enables precise adjustment of fan speed to suit different cooling demands
• Hybrid frame and Air Balance blades enhance airflow stability and efficiency

Key specs

• Fan size: 120 mm
• Maximum speed: 2050 RPM
• Airflow: 51.88 CFM
• Noise level: 27 dBA at full speed
• Bearing type: Rifle bearing
• Lighting: ARGB on blades and outer ring
• Control: PWM speed control

Connectivity and compatibility

This fan is compatible with most standard PC cases that support 120 mm fans. It connects via a PWM header, allowing integration with motherboard fan controls for dynamic speed adjustment. The ARGB lighting can be synchronized with compatible motherboard software to match your system’s color scheme and effects.

Ideal uses and environments

This case fan suits gaming rigs, workstations, and custom PC builds where both cooling efficiency and visual customization are important. It works well in setups that require quiet operation without compromising airflow, making it a strong choice for users who spend long hours on demanding applications or enjoy showcasing their system’s aesthetics.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Shipping costs are calculated at checkout based on destination, total weight, and selected speed. Free shipping applies to carts over $100 (excluding heavyweight items). All available options and final pricing are clearly shown before payment so you can choose the service that best fits your needs.

Deliveries are handled by major carriers such as USPS, UPS, and FedEx. Estimated delivery times are displayed at checkout and may vary depending on service level and location. Please note that these are estimates and can be affected by weather, holidays, or carrier volume. Once your order ships, you’ll receive a tracking number for real-time updates from pickup to final delivery.

Providing an accurate shipping address helps prevent delays, and changes may be limited once the order has been dispatched. P.O. boxes are supported only when permitted by the selected carrier. Packaging and handoff are optimized to protect items during transit, though oversized or high-weight products may require special handling. All shipping methods and any related constraints are clearly shown during checkout.

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Returns are accepted within 30 days of delivery. Items must be unused, in the same condition received, with tags, manuals, accessories, and original, unaltered packaging. Any item kept will be deducted from the refund. Start a return by sending us an email. Items sent back without approval may be refused or returned to the sender.

Some items are not returnable: opened TVs/combos/monitors 37″+, opened computers or software, electronic downloads, opened consumables (film, paper, bulbs, media, ink), custom or modified computers, special-order or “nonreturnable” items, submerged underwater gear, and opened educational media.

After inspection, refunds are issued to the original payment method; allow 5–7 business days for the credit to post. Shipping, handling, customs duties, and import taxes are nonrefundable. If an item is used, incomplete, or not in original condition, a 30% restocking fee may apply. Direct exchanges are not offered; purchase the replacement and return the original for a refund.

We act solely as a reseller. Any product warranty is provided and administered by the manufacturer, not by our store. That means eligibility, coverage, and outcomes are determined by the manufacturer’s policy for each brand and model. Before purchasing, we recommend reviewing the warranty terms on the manufacturer’s website or in the product documentation to confirm what is covered and for how long.

If you need warranty service, please file the claim directly with the manufacturer. They may require proof of purchase, the product serial number, original packaging, photos, or basic troubleshooting. Some brands ask you to register the product or obtain a case number before shipping it for repair or replacement. We don’t submit or approve claims, but we can point you to the correct support links and contact details.

Keep your invoice and packaging in a safe place, and report any functional issues to the manufacturer as soon as they appear. If you’re unsure whether a problem is covered, the manufacturer’s support team can confirm next steps and timelines. While we cannot intervene in decisions or outcomes, we’re happy to provide purchase documentation or guidance so you can move through the warranty process smoothly.

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