The FS-980 from ETS-Lindgren is a Microwave Absorber with Frequency 30 MHz to 18 GHz, Power 540 V/m CW, Thickness 39.37 Inch/1000 mm, Thickness 39.37 Inch, Thickness (mm) 1000 mm. Tags: Ferrite, Pyramid, Wedge Absorber. More details for FS-980 can be seen below.