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The typical application of a gasketing product is along the full perimeter of a door. For a standard 3x7 door, this would be equivalent to a length of 20 of gasketing, which includes the door bottom. This is typical for all exterior and indoor acoustical doors. Smoke doors on the interior may not use a door bottom seal, and thus would only have 17 of gasketing. However, for the purposes of this EPD, all products were modeled as covering the entire perimeter (20) of the door. Also included in this product group are door edges and astragals.