Abstract: A louver with a slidable face plate may be used to direct fluid flowing through the louver in a desired direction (e.g. right or left) Vanes of the louver may include pinions that couple to rack gears of a housing and a face plate. Sliding the face plate may rotate louver vanes so that fluid flowing through the louver is directed in the desired direction. The face plate may also be rotatively mounted to the housing so that the face plate has a limited amount of rotational movement. Rotating the face plate may allow control of direction of fluid flow through the louver in directions other than the direction controlled by sliding the face plate (e.g. up and down).