The factory scupper valves are no longer included with the kayak during the time of purchase but make a huge difference when it comes to keeping the deck of the kayak dry while on the water.
The short scupper valves fit the Topwater/Sportsman 106, 120, 106 PDL, and 120 PDL. The shorter design allows them to fit flush with the deck of the kayak, eliminating interference with standing, crates, and other cargo. Sold in packs of two valves.
Old Town Scupper Valve Fit Guide – https://www.oldtowncanoe.com/sites/oldtowncanoe_site/files/scupperfitguide-oldtown.pdf