The MT30-JT from Dutch Microwave Absorber Solutions is a Microwave Absorber with Frequency 800 MHz to 110 GHz, Attenuation -30 dB (reflectivity), Thickness 11.8 Inches (Height), Thickness (mm) 300 mm, Weight 5.1 Kg. Tags: Pyramid. More details for MT30-JT can be seen below.