The CoolZorb™ D 3W/1K from Laird Performance Materials is a Microwave Absorber with Attenuation 22 to 135 dB/cm, Thickness 0.01 to 0.15 Inches, Thickness (mm) 0.5 to 4 mm, Volume Resistivity 60000 Tohms, Operating Temperature -40 to 125 Degree C. Tags: EMI Absorber, Hybrid Absorber. More details for CoolZorb™ D 3W/1K can be seen below.