The ZBF4-C34-12G-177 from COM-MW is a Band Pass Filter with Frequency 28 to 40 GHz, Insertion Loss 3 dB, Rejection 40 to 65 dB, Upper Rejection 40 dB, Lower Rejection 40 to 65 dB. Tags: Module with Connectors. More details for ZBF4-C34-12G-177 can be seen below.