The FAS-25 from Sahajanand Laser Technology Limited is a Microwave Absorber with Absorption 15 to 20 dB, Frequency 4.5 to 40 GHz, Thickness 0.98 Inch/25 mm, Thickness 0.98 Inch, Thickness (mm) 25 mm. Tags: Pyramid, Foam Absorber. More details for FAS-25 can be seen below.