The QLF-25000-40-1 from Qualwave is a Low Pass RF Filter with Frequency DC to 25 GHz, Stopband Frequency 28 to 40 GHz, Insertion Loss 1.5 dB, Upper Rejection 40 dB @ 28 to 40 GHz, VSWR 1.70:1. Tags: Module with Connector. More details for QLF-25000-40-1 can be seen below.