The ZVBP-4300-S+ from Mini Circuits is a Band Pass Filter with Frequency 4250 to 4350 MHz, Center Frequency 4300 MHz, Insertion Loss 1 to 1.5 dB, Upper Rejection 20 to 29 dB, Lower Rejection 20 to 29 dB. Tags: Module with Connectors, Cavity Filter. More details for ZVBP-4300-S+ can be seen below.