Antec nsk4100 atx case 06mm 2 x usb3 92mm fan 3 year warranty description the nsk4100 builds upon the legacy of its award winning predecessor but stays true to the new solution series commitment of providing great value it was designed to compliment any environment with its black matte exterior and sleek front bezel with indirect intake vents in addition to its striking appearance the nsk4100 is constructed of 06mm secc steel achieving and excellent price to value ratio by integrating ante