i would like a room with this elliptical window shown on the rear wall i would like the walls to slope up into an elliptical ceiling just like the line drawing above the depth of the room is not shown but for scale the depth is 24 and the width of the room shown in the picture above is 16 the room is a rectangular shape 16x24 the ellipse extends all the way across the room i don t want any ledges or bump outs i just want the smooth elliptical shape of the window just bigger to extend across the entire room in the referenced picture the shape i want to extend all the way across the room is the ellipse shape shown right outside the lines of the window i would like the window to be steel with minimal size frame and grids