This RAM Vent-Temp with Back Dock Connection for Rectangular Vents from RAM MOUNTS installs to the back of compatible RAM and GDS docks and attaches to rectangular A/C vents using included zip ties, the included 50' flexible hose can be cut to the desired length of reach from vent to tablet dock. This version of the RAM Vent-Temp directs air produced by your vehicle's A/C system to either cool or heat up the docked tablet from the back. This is ideal for environments where the tablet needs to be cooled off or heated up to maintain operating temperatures during critical work functions. When installed correctly and the vent cover is attached to a rectangular air vent, the hose adapter features integrated magnets for easy breakaway when the RAM Vent-Temp is not needed or gets caught on something that could tug on the hose.