US Patent 7426799 Air freshener with frame and refill holder

A display frame with a refill holder comprises a transparent block with front and rear faces. A U-shaped mounting member is attached to the rear face about an outer periphery of same. The U-shaped mounting member has an inwardly extending wall. A channel is formed in a space between the rear face and the inwardly extending wall. A protrusion is attached to the rear face of the frame, wherein the protrusion in combination with the inwardly extending wall are configured to distance the rear face from a support surface when the frame is in a substantially horizontal position and provide a substantially unimpeded air passage adjacent the rear face.