US Patent 10100570 Threshold gasket assembly

The present invention is a threshold gasket assembly to be used in conjunction with end and/or back dams to form a sill pan. The threshold gasket assembly is fixed to a lower region of a rough opening in a wall and comprises a base with a plurality of fins projecting away from base to form a corresponding plurality of channels with a length generally the same as a base. Base has a generally “L” shaped cross section. At least two fins are sufficiently spaced from another to prevent contact with each other thereby simultaneously ensuring that moisture is dammed by at least one fin and directed by at least a portion of an adjacent channel.