The ZHSS-K18G+ from Mini Circuits is a RF High Pass Filter with Frequency 18000 to 40000 MHz, Insertion Loss 1.5 to 2.5 dB, Power 2 W, Rejection 60 to 80 dB, Lower Rejection 60 to 80 dB @DC to 13600. Tags: Connectorized. More details for ZHSS-K18G+ can be seen below.