This is a 6 channel CWDM mux/demux with a LC connector and monitoring port. It measures 19 inches, and is rack mountable. This mux/demux can bundle, and respectively unbundle, several fiber optic signals into a single fiber optic circuit. This OADM supports wavelengths between 1260nm and 1620nm, and can be customized among a variety of CWDM channels. This product includes an express port.