Racky Rax Fan Trays are designed to keep networking equipment cooler by increasing airflow through the cabinet. Specially designed to fit on the roof of Racky Rax Floor cabinets, the Fan trays come complete with either two or four high quality, low noise fans; and are powered via a standard UK 240V plug. The 2 way RR-FT-2 is for use in 600 by 600 mm or 800 by 600 mm Floor Standing cabinets; the 4 way RR-FT-4 is for 600mm by 800mm or 800 by 800mm server cabinets and the Large 4 way RR-FT-14 is for 800 by 1000 mm server cabinet.