The DSH-400H from ETS-Lindgren is a Microwave Absorber with Absorption 12 to 20 dB, Frequency 30 MHz to 40 GHz, Power 200 V/m CW, Thickness 17.95 inch/456 mm, Thickness 17.95 inch. Tags: Ferrite, Pyramid, Wedge Absorber. More details for DSH-400H can be seen below.