The QLF-8000-40 from Qualwave is a Low Pass RF Filter with Frequency DC to 8 GHz, Stopband Frequency 9 to 25 GHz, Insertion Loss 2 dB, Upper Rejection 40 dB @ 9 to 25 GHz, VSWR 2.00:1. Tags: Module with Connector. More details for QLF-8000-40 can be seen below.