Frame material for wall

A frame material for a wall of a building, comprising:

• a longitudinally extending metal beam having a pair of spaced apart, longitudinally extending side walls each having a top edge and a bottom edge and an outside surface wherein the width of said metal beam is equal to the distance between the outside surfaces of said side walls;
• and
• a tubular metal stud having a rectangular cross-section and a pair of opposing first and second wall members and a pair of opposing third and fourth wall members located between said first and second wall members,
• each of said first and second wall members being provided with a window having a top end, a bottom end, opposite first and second intermediate side ends spaced apart from each other a distance greater than the width of said beam and opposite first and second lower side ends between which said beam is received with said beam being oriented in the direction normal to the first and second wall members and with said bottom edge of each of said side walls of said beam being engaged by said bottom end of each of said windows,
• each of said first and second lower side ends of said window of said first wall member having a protrusion so that said outer surfaces of said side walls of said beam are closely fitted between said protrusions, when said beam is received between said first and second lower side ends,
• said first intermediate side end of said window of said first wall member having a stopper member which is displaceable between close and open positions and which extends from said first intermediate side end to a portion adjacent the corresponding second intermediate side end,
• said stopper member having an upper end defining a space between said upper end and said top end of the corresponding window of the first wall member when said stopper member is in said close position and a lower end positionable adjacent said top edges of said beam when said beam is received between said first and second lower side ends of said window of said first wall member,
• said stopper member permitting the insertion of said beam through said windows when displaced to said open position.