The 229-230-2-2 from Narda-MITEQ is a Waveguide Pressure Window with Frequency 3.3 to 4.9 GHz, Pressure 20 PSIG, Peak Power 1800 KW, Power 1300 W, Operating Temperature -40 to 120 Degree C. Tags: Rectangular. More details for 229-230-2-2 can be seen below.