Exterior wall system

An exterior wall section forming a portion of an exterior wall of a building having a framework, the exterior wall section comprising:

• a structural frame made of rigid components including a top plate, a sill, and studs, the studs including first and second exterior side studs extending between the sill and the top plate, the first exterior side stud being at one end of the structural frame and the second exterior side stud being at an opposite end of the structural frame, the studs including first and second intermediate studs disposed between and spaced apart from the first and second exterior side studs, the first and second intermediate studs extending between and connected to the sill and the top plate, the first and second exterior side studs and the first and second intermediate studs each being separate and distinct components relative to each other, the first and second exterior side studs and the first and second intermediate studs each being elongate, the structural frame having a perimeter extending along a length of the top plate, along a length of the first exterior stud, along a length of the sill, and along a length of the second exterior side stud;
• and
• an extruded metal border extending along the perimeter of the structural frame and being connected to and supported by the structural frame, the extruded metal border being configured to sealingly mate with one or more other exterior wall sections to form a water and air barrier.