These are brand new but open. I bought 4 the corsair Frame 4000D. DO NOT FIT. The Noctua NF-A20 PWM chromax.black.swap Premium Edition 200mm Quiet Cooling Fan is a high-quality case fan designed for computers. With a sleek black color and a large 200mm diameter, this fan is perfect for cooling the Northbridge chipset in your system. It features a SSO2 bearing type and a maximum fan speed of 800 RPM, ensuring quiet operation and efficient cooling. Made of durable plastic and with a 4-pin power connection, this fan is a reliable choice for enhancing the performance of your computer system.