The QLF-33000-25 from Qualwave is a Low Pass RF Filter with Frequency DC to 33 GHz, Stopband Frequency 37 to 50 GHz, Insertion Loss 3 dB, Upper Rejection 25 dB @ 37 to 50 GHz, VSWR 2.00:1. Tags: Module with Connector. More details for QLF-33000-25 can be seen below.