The CoolZorb™ 400 from Laird Performance Materials is a Microwave Absorber with Attenuation 34.8 to 62.6 dB/cm, Thickness 0.03 to 0.12 Inches, Thickness (mm) 1 to 3.18 mm, Volume Resistivity 160 TOhms, Operating Temperature -40 to 175 Degree C. Tags: EMI Absorber, Hybrid Absorber. More details for CoolZorb™ 400 can be seen below.