The AEC-4-MM from Microwave Vision Group is a Microwave Absorber with Frequency 12 to 95 GHz, Thickness 4 Inch/101.6 mm, Thickness 4 Inch, Thickness (mm) 101.6 mm, Weight 1.25 kg. Tags: Millimeter Wave Absorber. More details for AEC-4-MM can be seen below.