The FHY-18 from Sahajanand Laser Technology Limited is a Microwave Absorber with Absorption 14 to 40 dB, Frequency 30 MHz to 40 GHz, Power 0.5 W, Thickness 17.72 Inch/450 mm, Thickness 17.72 Inch. Tags: Pyramid, Hybrid Absorber, Foam Absorber. More details for FHY-18 can be seen below.