The WRCJV12-5220-5250-5350-5380-50 from Wainwright Instruments is a Band Stop Filter with Stopband Frequency 5.25 to 5.35 GHz, Bandwidth 100 MHz, Insertion Loss 2 to 4 dB, Rejection 50 dB, VSWR 1.67:1. Tags: Module with Connectors, Cavity Filter. More details for WRCJV12-5220-5250-5350-5380-50 can be seen below.