The ABS-CSF from ABS Technics is a Microwave Absorber with Frequency 3 to 40 GHz, Attenuation -40 to -20 dB(Reflectivity level), Power 0.15 W/cm², Thickness 3 to 6 Inch / 76.2 to 152.4 mm, Thickness 3 to 6 Inch. Tags: Foam Absorber, Convoluted Foam Absorber. More details for ABS-CSF can be seen below.