This RAM Mounts RAM Vent-Temp Rectangular Vent Adapter for the RAM Vent-Temp temperature module accessory installs to the 50' hose that comes with the RAM Vent-Temp kits. Add or replace this vent cover to accommodate the shape of your vehicle's A/C vent for optimal air flow when installed. This vent adapter covers a surface area of 2.72' x 4.77' and includes zip ties to secure it to your vent.