A supporting frame is a structure that provides support for other objects. An EASEL is a type of supporting frame, typically used to hold a canvas or board for painting or drawing. It is usually made of wood and has five letters. Another type of supporting frame is a CHASSIS, which is a metal frame that supports the components of a vehicle. It has seven letters. A TRUSS is another type of supporting frame, consisting of connected elements that form triangular units. It is commonly used in architecture and engineering and has five letters. Finally, a TRESTLE is a type of supporting frame, typically made of wood, that is used to support a horizontal surface such as a table. It has seven letters.