The 3660-T-1000 from Holland Shielding Systems is a Microwave Absorber with Absorption 17 to 40 dB, Frequency 30 MHz to 18 GHz, Power 1.5 kW, Thickness 39.37 Inch/1000 mm, Thickness 39.37 Inch. Tags: Pyramid, Foam Absorber, Hybrid Absorber, EMC Absorber. More details for 3660-T-1000 can be seen below.