The 750-230-C3-C3 from Narda-MITEQ is a Waveguide Pressure Window with Frequency 7.5 to 18 GHz, Pressure 15 PSIG, Peak Power 1 KW, Power 600 W, Operating Temperature -40 to 120 Degree C. Tags: Double-Ridge. More details for 750-230-C3-C3 can be seen below.