Cooler Master MFL-B2DW-21NP2-R2

Overview

The Cooler Master MFL-B2DW-21NP2-R2 is a set of three 120 mm case fans designed to enhance airflow and cooling performance in gaming and high-performance PC builds. Each fan operates at speeds up to 2050 rpm with PWM control, delivering up to 51.88 CFM of airflow while maintaining a low noise level of 27 dBA. The fans feature dual-loop ARGB lighting for customizable illumination, making them a practical choice for users who want both effective cooling and visual appeal.

Key features

• PWM speed control allows the fans to adjust their speed based on system temperature, balancing cooling and noise levels.
• Larger Air Balance blades efficiently guide airflow through the case to keep critical components cool.
• Hybrid frame design adds structural strength and reduces vibration, contributing to quieter operation.
• Rifle bearings ensure smooth rotation and long-lasting durability for consistent performance over time.
• Dual-loop ARGB lighting provides bright and uniform illumination that can be synchronized with compatible motherboards or controlled via the included LED controller.
• Low noise output of 27 dBA at maximum speed keeps your system quiet even under heavy loads.
• Pack of three fans offers flexible installation options for intake or exhaust in mid-tower and full-tower cases.

Key specs

• Fan size: 120 mm
• Maximum speed: 2050 rpm
• Airflow: up to 51.88 CFM per fan
• Noise level: 27 dBA at max speed
• Bearing type: rifle bearing
• Lighting: dual-loop ARGB
• Control: PWM speed control and included LED controller

Connectivity and compatibility

The fans connect via standard 4-pin PWM headers for speed control and a dedicated ARGB connector compatible with most motherboard lighting systems. The included LED controller allows users without compatible motherboards to customize lighting effects easily. This setup works well with a wide range of gaming and performance PC builds, providing both cooling and aesthetic enhancements.

Ideal uses and environments

This three-pack of case fans is well suited to gaming rigs, creative workstations, and any high-performance PC that requires reliable airflow without excessive noise. It fits naturally into mid-tower and full-tower cases where additional intake or exhaust fans improve thermal management. Users who value customizable lighting alongside effective cooling will find this fan set a strong choice for their build.

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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