The VBF-4440 from Mini Circuits is a Band Pass Filter with Frequency 4.2 to 4.7 GHz, Bandwidth 500 MHz, Center Frequency 4440 MHz, Insertion Loss 0.88 to 0.94 dB, Rejection 20 dB @ 2000 MHz. Tags: Module with Connectors. More details for VBF-4440 can be seen below.