A speaker enclosure includes a seal and a speaker grille with a tuned port. Mounting tabs are molded in the grille. The seal is engaged by a series of ribs which surround the grille mounting tabs and by a rib which surrounds the tuned port tube of the grille. The tabs have shoulders or stops which locate the grille relative to a front plate of the sound box. The sealing ribs around each tab have a height which provides the correct compression of the rubber foam seal material. As the speaker grille is installed using spring clips, the seal is compressed by the ribs to provide the seal required so that the space behind the speaker only vents through the tuned port.