

🧊 Slim fan, massive chill — conquer cramped builds with cool confidence!
The Thermalright TL-C12015B is a premium 120mm slim fan engineered for small form factor PCs. At just 15mm thick, it delivers an impressive 59 CFM airflow at 1800 RPM while maintaining whisper-quiet operation under 26.1 dBA. Equipped with fluid dynamic bearings and vibration-dampening rubber pads, it ensures efficient, silent cooling with precise PWM speed control. Ideal for ITX builds where space is at a premium, this fan combines high performance, durability, and sleek design to keep your system cool without compromise.






| ASIN | B09HKSSJH1 |
| Air Flow Capacity | 59 Cubic Feet Per Minute |
| Best Sellers Rank | #236 in Computer Case Fans |
| Brand | Thermalright |
| Compatible Devices | Desktop |
| Cooling Method | Air |
| Date First Available | September 30, 2021 |
| Item Weight | 5.9 ounces |
| Item model number | C12015B |
| Manufacturer | Thermalright |
| Material | Rubber |
| Maximum Rotational Speed | 1800 RPM |
| Noise Level | 26.1 Decibels |
| Number of Items | 1 |
| Power Connector Type | 4-Pin |
| Product Dimensions | 4.72"L x 0.59"W x 4.72"H |
| Voltage | 12 Volts |
| Wattage | 2 watts |
I**D
A Dispatch from the Cramped World of ITX Builds
Dateline: A Tiny PC Case, a Space Where Every Millimeter is a Battlefield, 4:07 AM. There is a special kind of madness that drives a man to build a computer inside a box the size of a shoebox. It is a high-stakes game of inches, a brutal, three-dimensional chess match against the unyielding laws of physics. Your greatest enemy in this tiny, hot-box world is heat, and your greatest challenge is finding a fan that can fight it without demanding a space you simply do not have. Standard 25mm fans are bloated, arrogant things in this domain. They are clumsy bulls in a china shop of miniaturized components. You need something specialized. Something lean, mean, and built for the trenches. You need the Thermalright TL-C12015B Slim Fan. This is not just a fan; it is a miracle of engineering. A scant 15 millimeters thick, it is a wafer-thin sliver of high-performance potential. When you hold it, you expect it to be flimsy, a fragile piece of plastic compromise. But it is not. It feels solid, premium, a dense and well-built tool that belies its skeletal profile. But the real shock comes when you power it on. For something this thin, you expect a polite, anemic puff of air. What you get is a hurricane. This slim blade moves a shocking, almost unbelievable amount of air. It’s a testament to some kind of aerodynamic black magic, a full-sized fan’s performance packed into a low-profile chassis. It’s the quiet, powerful engine that makes the impossible, high-performance ITX build a reality. In the cramped, claustrophobic guts of a small form factor case, where a heatsink is fighting for space with a RAM stick and a cable is threatening to choke the life out of your airflow, this fan is your secret weapon. It fits where others cannot. It brings a rush of cool, life-giving air to components that would otherwise be gasping for breath, thermally throttling themselves into a state of pathetic submission. And the value… the value is the final, beautiful punchline. In the boutique world of SFF building, where specialized parts often carry an absurd, "enthusiast" price tag, the Thermalright slim fan is a breath of fresh, affordable air. It delivers top-tier performance and solid build quality for a price that feels like a gift. This is not just a good fan; it is an essential piece of kit for anyone brave or foolish enough to venture into the world of ITX builds. It is the problem solver, the space saver, the silent, powerful engine that keeps your tiny, beautiful creation from melting itself into a puddle of expensive slag. A highly recommended, five-star champion for the small-box warrior.
K**S
Best value brand out there!
Great quiet fan for tight spaces. Amazing value for the money, thermalright seriously makes the best budget fans that I've tried other than Arctic which are great performance but look much more crude compared to thermalright's fans which look more appealing for the price. They move plenty of air even for being slim fans, this one worked out great as a rear intake for my GPU since there was a dead area there that cool air couldn't reach from my front fans. Highly recommend these any build!
J**G
Fantastic fan, quiet, plenty of airflow
I am using this with a 3D printed bracket to cool my AMD Radeon 7900 XT. Fans are quiet, and work great.
D**S
Amazing slim 120mm
Great fan move amazing about of air for a slim fan. It's also very quiet.
M**G
Nice fans for the price!
For what you pay for these fans, they provide really great performance. I use these for an SFF build, and the build quality is pretty solid. -1 star because 1 out of 3 fans I ordered started to whine when mounted as top-side exhaust
B**N
Solid fan for tight spaces
It's quiet. It fits into slim spaces. It moves decent air. This is all a fan needs to do. This one does it without costing too much money.
J**R
Fits where "thicker" cooling fans would not!
This fan fits into a space located on one pf the side ventilation slots of a Corsair 200R case, when other solutions would not. This "thin-ness" allows me to provide better cooling for an MSI RTX 5070ti Vanguard GPU.
E**N
Fan Scrapes the case and makes noise
If the intake side of the fan is screwed to the case, it will scrape and make a loud hum. I had to create a little space by laying some zip ties to create space between the fan and case to stop the sound. Aside from this MAJOR problem, it works fine and seems to cool very well.
N**A
Ürün olması gerektiği gibi beklentiyi karşılıyor.
A**N
very nice fan and it is slim and functonal and really quiet too.
D**N
Never have I ever felt so cool, this little fan really blew me away.
O**Z
El tamaño es super delgado pero es igual de potente y eficiente que uno de tamaño normal, el RGB es muy bueno, sin duda debí comprar más de este tamaño, en el gabinete luce muy bien y mejora muchísimo la estética.
H**I
Fans work as intented. But the price dropped by 31% just a day after my order shipped. Worth it when it is below $18.
Trustpilot
1 month ago
5 days ago