The QLF-10000-20 from Qualwave is a Low Pass RF Filter with Frequency DC to 10 GHz, Stopband Frequency 12 GHz, Insertion Loss 0.5 dB, Upper Rejection 20 dB @ 12 GHz, VSWR 1.70:1. Tags: Module with Connector. More details for QLF-10000-20 can be seen below.