The RWPW-8.2-12.4-WR90-500W-e5 from Raditek is a Waveguide Pressure Window with Frequency 8.2 to 12.4 GHz, Pressure 40 PSIG, Insertion Loss 0.15 dB, Peak Power 500 kW, Power 500 W. Tags: Rectangular. More details for RWPW-8.2-12.4-WR90-500W-e5 can be seen below.