The MT45-JT from Dutch Microwave Absorber Solutions is a Microwave Absorber with Frequency 600 MHz to 110 GHz, Attenuation -30 dB (reflectivity), Thickness 17.7 Inches (Height), Thickness (mm) 450 mm, Weight 7.4 Kg. Tags: Pyramid. More details for MT45-JT can be seen below.