The FMFL1013 from Fairview Microwave is a Band Pass Filter with Frequency 2 to 4 GHz, Insertion Loss 1.5 to 2 dB, Rejection 55 dB, Upper Rejection 55 dB, Lower Rejection 55 dB. Tags: Module with Connectors, Cavity Filter, Combline Filter. More details for FMFL1013 can be seen below.