The MLFR-160418 from Micro Lambda Wireless, Inc. is a Band Stop Filter with Stopband Frequency 4 to 18 GHz, Insertion Loss 1.75 dB, Power 1 W(28 dBm), VSWR 2.0:1, Phase Linearity +/- 5 MHz. Tags: Module with Connectors. More details for MLFR-160418 can be seen below.