The QLF-13000-55 from Qualwave is a Low Pass RF Filter with Frequency DC to 13 GHz, Stopband Frequency 15.2 to 40 GHz, Insertion Loss 1.5 dB, Upper Rejection 55 dB @ 15.2 to 40 GHz, VSWR 1.80:1. Tags: Module with Connector. More details for QLF-13000-55 can be seen below.