Cooling fan NoiseBlocker B14-2 140 mm 900 RPM, model ITR-B14-2

NoiseBlocker B14-2 140 mm 900 RPM (model ITR-B14-2) is a computer cooling fan engineered for low-noise operation in desktop PCs, workstations and quiet system builds. The 140 mm frame and a nominal rotational speed of 900 RPM are balanced to deliver steady airflow with reduced acoustic output, making the fan suitable for case ventilation or installation on radiators where slow, consistent air movement is preferred over high-speed cooling bursts.

Advantages

The fan provides reliable, low-noise airflow at a fixed low rotational speed to minimize audible disturbance while supporting component cooling. Its larger 140 mm diameter allows for effective air displacement at lower RPM compared with smaller fans, reducing turbulence and extending operational longevity. The design fits common case and radiator mounting standards and offers stable performance under typical desktop and workstation load conditions.

Suitable for

• Silent or low-noise PC builds
• Case ventilation in mid-tower and full-tower enclosures
• Radiator cooling in liquid-cooled systems requiring gentle airflow
• Workstations where reduced acoustic impact is important

Key specifications

• Fan diameter: 140 mm
• Nominal speed: 900 RPM
• Intended use: case fan / radiator fan
• Airflow characteristic: steady low-speed airflow for reduced noise
• Mounting: four-point frame mounting compatible with standard 140 mm screw patterns

How to use

Install the fan in a standard 140 mm mounting position in your PC case or attach it to a compatible radiator using appropriate screws or mounting hardware. Connect the fan to a motherboard fan header or a controller that supports the fan's power connector type; ensure the header or controller can provide the required voltage and current. Orient the fan so that airflow direction matches the intended intake or exhaust configuration for optimal case air circulation. After installation, verify fan operation in BIOS or with monitoring software and confirm stable RPM and airflow performance.

Recommendations

For quiet operation, position the fan as an intake at the front or as a low-speed exhaust at the rear/top to maintain positive or neutral case pressure. Keep dust filters clean and ensure unobstructed airflow paths to preserve cooling efficiency. When used on radiators, maintain even spacing and avoid stacking multiple low-speed fans in configurations that significantly restrict airflow.