The ABS-SRB from ABS Technics is a Microwave Absorber with Frequency DC to 1 GHz, Thickness 0.24 to 2.95 Inch / 6 to 75 mm, Thickness 0.24 to 2.95 Inch, Thickness (mm) 6 to 75 mm, Operating Temperature 170 Degree C. More details for ABS-SRB can be seen below.