The PFP-30LC from Riken Environmental System is a Microwave Absorber with Frequency 30 MHz to 40 GHz, Thickness 11.81 Inch/300 mm, Thickness 11.81 Inch, Thickness (mm) 300 mm, Weight 2.1 kg. Tags: Ferrite, Pyramid. More details for PFP-30LC can be seen below.