Indoor wall panel interior trims, also called inside corners or internal trims, are specially shaped molding or profiles designed to cover the 90-degree angle where two wall panels or walls meet. They provide a finished look, protect the vulnerable edges of the panels from damage like chipping or moisture, and create a smooth, seamless transition. These trims facilitate the connection of panels in a corner by allowing them to slide into the trim's channel, offering a clean, professional, and durable solution for various indoor wall panel applications.