The FLP-2650 from Marki Microwave is a Low Pass RF Filter with Frequency DC to 25 GHz, Stopband Frequency 31 to 36.5 GHz, 3 dB Cutoff Frequency 26.5 GHz, Insertion Loss 1.5 dB, Rejection 25 to 50 dB. Tags: Module with Connector. More details for FLP-2650 can be seen below.