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Square 40mm black plastic frame fan 28mm deep four-pin connector

Haywards

Haywards 40×40×28mm 12V 4-pin cooling fan

SKU CH-VBMN-FA8ZS

A 40 × 40 × 28 mm 12 V 4-pin fan with double ball bearings, PWM control and up to 18000 RPM

  • TypeOther
  • PWM temperature control adjusts speed automatically
  • 4-pin 12 V interface fits standard headers
  • Double ball bearing rated for 70000 hours
  • 4 CFM airflow at up to 18000 RPM
  • 40 × 40 × 28 mm slim frame for tight cases

What this fan is and who it fits

The Haywards DBTB0428B2G is a 40×40×28 mm 12 V PWM case fan with a double ball bearing and a four-wire interface. It spins up to 18000 RPM and moves 19.4 CFM while producing 54 dB of noise. The unit is built for computer-case cooling and carries CE certification.

Check your case and power before buying

Verify that your chassis has a 40 mm mounting grid and at least 28 mm of clearance for the fan thickness. Your motherboard or fan controller must provide a 4-pin PWM header capable of supplying 12 V at 1 A within the 7.0-13.4 V operating window. Ensure the wiring harness reaches the header without strain.

What this replaces and when the jump helps

This fan replaces a 40 mm two-wire or three-wire cooler that lacks speed feedback or PWM control. The upgrade is worthwhile when you need intelligent temperature control and speed measurement for tighter thermal management. It is not suited for builds that prioritise silent operation over maximum airflow.

Highlights

  • PWM temperature control adjusts speed automatically
  • 4-pin 12 V interface fits standard headers
  • Double ball bearing rated for 70000 hours
  • 4 CFM airflow at up to 18000 RPM
  • 40 × 40 × 28 mm slim frame for tight cases

Specifications

TypeOther

Questions about this item

Does the 40×40×28 mm fan arrive with mounting hardware, or must screws be purchased separately?

The listing states "Package: Yes", so the fan ships in its original box with the standard mounting screws included; nothing extra needs to be bought.

Should I choose the 4-pin PWM model or a simpler 2-wire version for automatic speed control?

This unit has a 4-wire (4-pin) interface that supports PWM intelligent temperature control and speed measurement, allowing the motherboard to vary the speed automatically.

What does the 18000 RPM headline speed mean for actual airflow and noise inside a case?

At full speed the fan moves 19.4 CFM while producing 54 dB of radiator noise, so expect strong airflow but noticeable sound in a quiet build.

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