Abstract: A cover for a garage door which includes a front portion adapted to cover a street facing surface of the garage door, and a pair of rear portions adapted to be arranged covering a garage facing surface of the garage door. The cover also includes at least four collars adapted to be arranged at corners of the garage door. Each collar defines a cutout extending inwardly from an edge of the cover to facilitate an extension of an associated corner of the garage door outside the cover, a first coupling portion extending along the rear portion from the cutout to a lateral edge of the cover, and a second coupling portion extending from the cutout in a direction opposite to the first coupling portion. The first coupling portion is adapted to engage with the second coupling portion.

Abstract: A cover for a garage door which includes a front portion adapted to cover a street facing surface of the garage door, and a pair of rear portions adapted to be arranged covering a garage facing surface of the garage door. The cover also includes at least four collars adapted to be arranged at corners of the garage door. Each collar defines a cutout extending inwardly from an edge of the cover to facilitate an extension of an associated corner of the garage door outside the cover, a first coupling portion extending along the rear portion from the cutout to a lateral edge of the cover, and a second coupling portion extending from the cutout in a direction opposite to the first coupling portion. The first coupling portion is adapted to engage with the second coupling portion.

Abstract: A cover for a garage door which includes a front portion adapted to cover a street facing surface of the garage door, and a pair of rear portions adapted to be arranged covering a garage facing surface of the garage door. The cover also includes at least four collars adapted to be arranged at corners of the garage door. Each collar defines a cutout extending inwardly from an edge of the cover to facilitate an extension of an associated corner of the garage door outside the cover, a first coupling portion extending along the rear portion from the cutout to a lateral edge of the cover, and a second coupling portion extending from the cutout in a direction opposite to the first coupling portion. The first coupling portion is adapted to engage with the second coupling portion.

Abstract: A duct fitting apparatus comprising a duct fitting having an aspect ratio of generally 1:1 at each end and transitioning toward a middle section having a non-uniform aspect ratio up to about 2.4:1. The transition section may have an elliptical cross-sectional shape. A plurality of surface treatments associated with the interior wall of the duct fitting between the upstream inlet end and the apex of divergence create aerodynamic vortices proximate to the wall of the inside bend of the curve, resulting in lower loss of total pressure of air or fluid passing therethrough.