The 3660-P-495 from Holland Shielding Systems is a Microwave Absorber with Absorption 12 to 25 dB, Frequency 30 MHz to 18 GHz, Power 1.5 kW, Thickness 2.55 Inch/65 mm, Thickness 2.55 Inch. Tags: Pyramid, Foam Absorber, Hybrid Absorber, EMC Absorber. More details for 3660-P-495 can be seen below.