Patent ID: 8016241

Claim:
An aeronautical device comprising: first and second frame members; a foam insulation member having a front side and a back side and first and second ends disposed between the front side and the back side, wherein at least one of the first and second ends is linearly angled in only an inward direction from the front side of the foam insulation member to the back side of the foam insulation member at an angle relative to a vertical plane of greater than 0 degrees, and the foam insulation member provides thermal and acoustic insulation to the aeronautical device; wherein the first and second ends of the foam insulation member extend between the first and second frame members in compression, and the foam insulation member is self-retained, without the use of fasteners, between the first and second frame members due to a friction fit resulting from the foam insulation member being disposed between the first and second frame members in compression.