Patent ID: 7566263

Claim:
In combination, a grille and a connector frame for mounting the grille at a duct outlet in a wall; the combination having at least one lock element that is cantilevered from one of the connector frame and the grille and releasably engages the other of the connector frame and grille in a snap fit connection to hold the grille to the connector frame; the lock element having a locked position wherein the grille is held to the connector frame and an unlocked position wherein the grille is removable from the connector frame; the lock element pivoting between the locked and unlocked positions: the lock element having a lock surface and the connector frame having a lock surface; the lock surface of the lock element engaging the lock surface of the connector frame when the lock element is in the locked position; the connector frame including a retaining wall moveable between first and second positions; a portion of the lock element being disposed between the retaining wall and the lock surface of the connector frame when the lock element is in the locked position; and the retaining wall being movable to its second position by a portion of the lock element when the lock element is moved from the locked position to the unlocked position.