An architectural wall system comprising: a lower frame; an upper frame connected to the lower frame, wherein the lower frame is connectable to a permanent structure; a wall connected to the upper frame; and a horizontal leveler configured to be attached between a first end of the wall and the permanent structure, wherein the horizontal leveler allows a vertical position of the first end of the wall to be selectively adjusted at both a crude level and a fine level relative to the permanent structure, wherein the horizontal leveler is characterized by comprising: an intermediate displacement mechanism which comprises a connection block connected to the lower frame; a leveling bracket connected to the upper frame; a first bolt that extends through the upper frame and into a threaded hole in the connection block to connect the upper frame and the lower frame together; a second bolt that extends through the leveling bracket such that a distal end of the second bolt can engage the connection block, wherein said second bolt passes through a threaded hole in said levelling bracket; the fine level of vertical position is adjusted between the upper frame and the lower frame by said intermediate displacement mechanism configured to provide a displacement force between the upper frame and lower frame, wherein the second bolt is connected to the upper frame, and the second bolt is movable against the lower frame to provide the fine level adjustment between the upper frame and the lower frame; and the crude level of vertical position is adjusted between the lower frame and the permanent structure by a 3-point connection between the lower frame and a permanent structure. a lower frame; an upper frame connected to the lower frame, wherein the lower frame is connectable to a permanent structure; a wall connected to the upper frame; and a horizontal leveler configured to be attached between a first end of the wall and the permanent structure, wherein the horizontal leveler allows a vertical position of the first end of the wall to be selectively adjusted at both a crude level and a fine level relative to the permanent structure, wherein the horizontal leveler is characterized by comprising: an intermediate displacement mechanism which comprises a connection block connected to the lower frame; a leveling bracket connected to the upper frame; a first bolt that extends through the upper frame and into a threaded hole in the connection block to connect the upper frame and the lower frame together; a second bolt that extends through the leveling bracket such that a distal end of the second bolt can engage the connection block, wherein said second bolt passes through a threaded hole in said levelling bracket; the fine level of vertical position is adjusted between the upper frame and the lower frame by said intermediate displacement mechanism configured to provide a displacement force between the upper frame and lower frame, wherein the second bolt is connected to the upper frame, and the second bolt is movable against the lower frame to provide the fine level adjustment between the upper frame and the lower frame; and the crude level of vertical position is adjusted between the lower frame and the permanent structure by a 3-point connection between the lower frame and a permanent structure. an intermediate displacement mechanism which comprises a connection block connected to the lower frame; a leveling bracket connected to the upper frame; a first bolt that extends through the upper frame and into a threaded hole in the connection block to connect the upper frame and the lower frame together; a second bolt that extends through the leveling bracket such that a distal end of the second bolt can engage the connection block, wherein said second bolt passes through a threaded hole in said levelling bracket; the fine level of vertical position is adjusted between the upper frame and the lower frame by said intermediate displacement mechanism configured to provide a displacement force between the upper frame and lower frame, wherein the second bolt is connected to the upper frame, and the second bolt is movable against the lower frame to provide the fine level adjustment between the upper frame and the lower frame; and the crude level of vertical position is adjusted between the lower frame and the permanent structure by a 3-point connection between the lower frame and a permanent structure.