The FLP-3200 from Marki Microwave is a Low Pass RF Filter with Frequency DC to 31 GHz, Stopband Frequency 36.5 to 41.5 GHz, 3 dB Cutoff Frequency 32 GHz, Insertion Loss 1.8 dB, Rejection 25 to 50 dB. Tags: Module with Connector. More details for FLP-3200 can be seen below.