This RAM® Vent-Temp™ temperature module accessory (RAM-VENT2-RND-50U) installs to the front of any RAM® or GDS® dock and attaches to circular A/C vents 3.67" in diameter, using included zip ties. This version of the RAM® Vent-Temp™ directs air produced by your vehicle A/C system to either cool, or heat up the front of the docked phone or tablet. This is ideal for environments where the device needs to be cooled off or heated up to maintain operating temperatures during critical work functions, or to defrost the front of the tablet to keep your touchscreen operable. When installed correctly and vent cover is attached to a circular air vent, both the hose adapter and front dock attachment feature integrated magnets for easy break-away when the RAM® Vent-Temp™ is not needed, or gets caught on something that could tug on the hose. The 50" included flexible hose can be cut to the desired length of reach from vent to dock.