12038 Brushless DC Cooling Fan — 4.75 Inch (120×120×38mm), 12V

Description

12038 Brushless DC Cooling Fan — 4.75 Inch (120×120×38mm), 12V

When standard 25mm fans are not enough, the 12038 Brushless 12V DC Exhaust Cooling Fan steps in. With a deeper 38mm blade profile in the same 120mm × 120mm footprint, this fan moves significantly more air than its 12025 counterpart — making it the go-to choice for high-heat environments, loaded server racks, and performance PC builds that demand maximum thermal throughput.

Powered by a brushless motor with a rated lifespan exceeding 30,000 hours, and operating at the universally compatible 12V DC, this fan drops into any standard 120mm fan slot with no modifications. Whether you are cooling a dense server chassis, a laser engraver control board, or a hot-running industrial enclosure, the 12038 delivers where thinner fans fall short.

Key Features

• 38mm deep blade frame — greater blade surface area for higher CFM airflow vs standard 25mm fans
• Brushless motor — long service life, low noise, maintenance-free operation
• Standard 120mm mounting — fits all 120mm fan mounts, M4 corner screws
• 12V DC input — compatible with ATX PSUs, Molex adapters, and industrial 12V rails
• Axial exhaust design — suited for exhaust, intake, and forced-ventilation setups
• Low vibration frame — stable, quiet operation in always-on installations

Specifications

Compatible With

• ATX desktop PC cases — front intake, rear exhaust, top exhaust positions
• Server racks and 1U / 2U rackmount enclosures requiring high airflow
• Industrial control panels and high-heat electrical cabinets
• Networking equipment — switches, NAS boxes, high-load routers
• Laser engravers, 3D printers, and CNC control bays
• DIY home lab builds needing higher CFM than standard 25mm fans
• CCTV DVR / NVR systems and media servers

Installation Guide

1. Identify airflow direction — the label side faces the air intake; the frame/strut side is the exhaust.
2. Connect the red wire to 12V positive and the black wire to GND. The yellow wire (3-pin) carries tachometer signal for speed monitoring.
3. For PC builds: connect to a chassis fan header on your motherboard or a Molex adapter on the PSU.
4. Note the 38mm depth before installing — verify clearance inside your chassis before mounting.
5. Secure with four M4 screws through the corner mounting holes into your panel or bracket.
6. Maintain a minimum 15mm clearance on both intake and exhaust sides for unrestricted airflow.
7. Clean blades and grilles with compressed air every 3–6 months for optimal long-term performance.

The 12038 Brushless 12V DC Fan ships ready to install — standard 120mm mounting, no adapters needed. Ideal upgrade for any build where a 25mm fan is not keeping up with heat demands.