The FAS-15 from Sahajanand Laser Technology Limited is a Microwave Absorber with Absorption 15 dB, Frequency 4.5 to 40 GHz, Thickness 0.59 Inch/15 mm, Thickness 0.59 Inch, Thickness (mm) 15 mm. Tags: Pyramid, Foam Absorber. More details for FAS-15 can be seen below.