| 摘要 |
An adjustable sill assembly includes an elongated substrate base composed of a molded composite material and defining a T-shaped slot extending along the length of the substrate base and open to a top surface of the substrate base; a sill plate connected with the substrate base; a riser having a top and two downwardly-extending legs defining an interior of the riser, the interior of the riser having a pair of flanges angling downward and toward one another; and means for connecting the substrate base with the riser including a T-nut having a flange and a corresponding screw, the T-nut being slidebly and non-rotatably supported within the T-shaped slot and the screw being rotatably and slideably supported by the pair of flanges and wherein the riser is secured to the substrate base by inserting the screw into the T-nut.
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