The 3680-1500 from Holland Shielding Systems is a Microwave Absorber with Absorption 11 to 50 dB, Frequency 30 MHz to 100 GHz, Power 6 kW, Thickness 59.05 Inch/1500 mm, Thickness 59.05 Inch. Tags: Pyramid, Power Absorber. More details for 3680-1500 can be seen below.