All Mishimoto aluminum fan shrouds include an adhesive protective strip. This adhesive-backed foam strip seals any remaining gap between the fan shroud and radiator so that the fans are only moving air that has passed through the radiator core as opposed to pulling in air from the engine bay, resulting in improved cooling efficiency.
Bought the mishimoto fans for a eclipse and they were wired wrong from factory. Caused me hours of extra work just to get the fans to work. Thought it was plug and play and was far from it!