The ZXLF-K312H+ from Mini Circuits is a Low Pass RF Filter with Frequency DC to 3.53 GHz, Stopband Frequency 7.9 to 22 GHz, Insertion Loss 2.2 to 3.5 dB, Rejection 13 to 51 dB, Upper Rejection 13 to 51 dB @7900 to 18500 MHz. Tags: Module with Connector, Reflectionless Filter. More details for ZXLF-K312H+ can be seen below.