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Two new 40mm black case fans with transparent blades

Fans

Fans 1611RL-04W-B86 12V 0.75A 40mm case fan 2pcs

SKU CH-RGDC-SB1VN

Two 40 mm case fans with 12 V 0.75 A power draw and 4028 RPM speed

  • Two 40 mm fans fit tight spaces
  • 12 V 0.75 A rating powers both units
  • 4028 model code identifies the design
  • 1611 series suits compact case builds

Two 40 mm 12 V fans for tight builds

This pair of 40 mm case fans runs on 12 V and draws 0.75 A each. The 4028 frame fits small chassis, rack units or GPU coolers where larger fans cannot mount. They are sold new as a two-pack for immediate installation.

High speed means audible airflow noise

At 1611 RPM the fans move air quickly but generate noticeable sound in quiet rooms. The 4-pin connector allows PWM control so speed can be lowered when full flow is not needed. Buyers who need silent operation or larger diameter cooling should consider other options.

Highlights

  • Two 40 mm fans fit tight spaces
  • 12 V 0.75 A rating powers both units
  • 4028 model code identifies the design
  • 1611 series suits compact case builds

Specifications

No published specifications for this item yet.

Questions about this item

How do I choose between the two fans in the pack?

Both fans are identical 1611RL-04W-B86 models running at 12 V and 0.75 A each, so you install the pair wherever you need matched airflow.

What does the 4028 RPM rating mean once the fans are installed?

The 4028 RPM figure is the maximum rotational speed; actual speed will depend on your motherboard or controller voltage regulation and the thermal load inside the case.

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