The 3660-P-1000 from Holland Shielding Systems is a Microwave Absorber with Absorption 15 to 35 dB, Frequency 30 MHz to 18 GHz, Power 1.5 kW, Thickness 5.90 Inch/150 mm, Thickness 5.90 Inch. Tags: Pyramid, Foam Absorber, Hybrid Absorber, EMC Absorber. More details for 3660-P-1000 can be seen below.