The FFSX-H from KITAGAWA INDUSTRIES America, Inc. is a Microwave Absorber with Frequency 6.78 MHz, 13.56MHz, Thickness 0.004, 0.008, 0.011 Inch/0.1, 0.2, 0.3 mm (Ferrite), Thickness 0.004, 0.008, 0.011 Inch, Thickness (mm) 0.1, 0.2, 0.3 mm (Ferrite), Operating Temperature -40 to 85 Degree C. Tags: Ferrite. More details for FFSX-H can be seen below.