This is a fairly thin, multi blade 80mm case fan

This is a 80mm dc cooling fan having a thickness of 10.7mm. The 80mm x 80mm fan has an installation height of only 10.7 mm, making it suitable for small form factor cases & for installations for which a 25 mm fan does not fit. Corresponding screws for mounting are already included.
80mm Slim Cooling Fan are perfect for adding discrete airflow for space-restricted applications; Ideal for small PC cases (HTPC, Mini ITX, MATX Builds, Small Form Factor), or as a replacement fan for broken or old 12v 8cm fans in 3D printers power supply and control board, EVGA GTX, external hard drive enclosure.

This is a premium quality 12 volt 80x80x10mm Brushless Fan, comes with long life low noise sleeve bearing that has an operating lifetime of 35,000 hours. The fan's Blade / Housing is constructed of P.B.T Plastic Material. It is a 2-pin connector fan with 250mm / 9.84 inches enough long power cable.

The fan generates an airflow of 18.9 CFM and static pressure of 0.13 mmH2O. It is a 2-pin connector fan and spins at a constant speed of 2500 RPM. It is also very quiet in operation and has a maximum noise rating of 25.6 dBA.

Besides a 80x80x10mm fan, it comes with nuts/bolts long enough to mount for your use, also includes a 80mm metal fan guard are used to provide a physical barrier around spinning fan blades to prevent accidental contact with fingers or other objects.

So, if you looking for a ultra slim and quiet 80mm computer case fan then you won’t find anything better than this. Slim Frame Design: 80x10mm ultra thin fan can be used as a replacement for broken or old 12v 8cm fans in EVGA GTX, 3D Printers Power Supply and Control Board, Laptop Cooler, External Hard Drive Enclosure
Great for Tight Spaces: The 80mm x 80mm fan has an installation height of only 10.7 mm, making it suitable for small PC cases (HTPC, Mini ITX, MATX Builds) & for installations for which a 25 mm fan does not fit
Full Protection: Metal fan grill on the fan side can protect your hand and prevent cable damage from blade, corresponding screws for mounting are already included
2 Pin Fans: Red wire: Positive; Black wire: Negative; You can exchange the red and black wires in the connector if their position is dfferent from your old fan
Fan Specs: 80 x 80 x 10.7 mm (3.15 x 3.15 x 0.42 in.) | Rated Voltage: 12V DC | Rated Current: 0.13 Amp | Power: 1.2W | Airflow: 18.9 CFM | Static Pressure: 0.13 In H2O | Noise: 25.6 dBA | Speed: 2500 RPM
Brushless Motor: Operating Voltage:7 to 13.5V, overtake 13.5V, it also can work, but will effects the fan's life