The Fractal Design Noise Absorber Kit is a product for those of you who enjoy to work and play with a computer, but not listen to the noise of it. It's a universal kit to silence most cases out there. The Kit is made out of noise absorbing material with two layers; one thinner (2.5mm) which absorbs vibrations and one thicker (14mm) which absorbs noise from fans.
Delivered in a kit of four pads you can easily cut this to fit your case. Just check out the measurements below and compare with your own case. One of the four pads is made out only the thinner 2mm anti-vibration material mentioned above. This is supposed to be mounted on the side plate behind the motherboard plate, where space is usually limited. The other three pads, which are 16mm thick, should be mounted in the other side panel, the top panel and in the bottom of the case.