The MF32-0002-00 from MAST Technologies is a Microwave Absorber with Frequency 4 to 40 GHz, Thickness 3.07 Inch/76.9 mm, Thickness 3.07 Inch, Thickness (mm) 76.9 mm, Operating Temperature -60 Degrees F to 250 Degrees F. Tags: Convoluted Foam Absorber. More details for MF32-0002-00 can be seen below.