The PFP-45LC from Riken Environmental System is a Microwave Absorber with Frequency 30 MHz to 40 GHz, Thickness 17.71 Inch/450 mm, Thickness 17.71 Inch, Thickness (mm) 450 mm, Weight 3.2 kg. Tags: Ferrite, Pyramid. More details for PFP-45LC can be seen below.