The XBF-24+ from Mini Circuits is a Band Pass Filter with Frequency 19.5 to 20.5 GHz, Bandwidth 500 MHz, Center Frequency 20000 MHz, Insertion Loss 5 to 6 dB, Rejection 26 to 66 dB. Tags: Surface Mount, Reflectionless Filter. More details for XBF-24+ can be seen below.