Patent ID: 6878057

Claim:
A system for filtering and scenting the air of an individual room of a building serviced by a forced air central unit, comprising: a. air transmissible port disposed on the ceiling of said individual room; b. air passage-way connecting the forced air from said central unit to said individual room of said building; c. tri-louvered ceiling register disposed on said ceiling over said air transmissible port, wherein the upper side of said register presents four vertically disposed sides defining an area therebetween and a bottom comprised of a plurality of pivotally disposed blades, the longitudes of a portion of said plurality of blades are disposed parallel to each other and parallel to at least one of said vertically disposed sides and are spaced apart from each other and from the vertically disposed side which they are parallel to; and, d. filtration and scenting element having a length, a width and a thickness, said length and width being sized to substantially cover said area between said vertically disposed sides of said tri-louvered register when horizontally disposed on the bottom thereof and said thickness being sized to slidably fit through the space between the blade of said tri-louvered ceiling register which is nearest a vertically disposed side of said tri-louvered register which is parallel to said blade when said blade is pivoted to a position which maximizes the space therebetween.