This is for a set of vent cover flap's. they are the exact dimensions and length of the stock vent flaps. made of a very versatile plastic, more so than the original and will last a lot longer. For installation pull the old one out, and remove the arm with the flap, don't worry about saving the arm, the NEW set comes with arm all in one piece and you don't have to babying it when installing, its designed to bend and you just push it through the hole, insert rod into the vent operating mechanism, replace the cap, and your done.
This is for a set of VENT FLAPS!