12" Extra Wide Split King Gap Filler for Adjustable Bed, Bed Bridge Twin to King Converter with Washable Cover, Close The Gap (0-1.5"),White

We got this after a few weeks of having our Cali king split. It works well, and our dog doesn't fall in the crack anymore. 😁. It needs frequent adjustments when the bed top is moved. https://a.co/d/03yai9Eb