5 u2032 wide which is the width of common curtainwalls and 10 ft to 12 ft high similar to floor to floor height of most commercial buildings although other dimensions are likely shown in fig1 is an array of cladding elements 8 of modules 6 clad with either an array of multiple louver blades 26 or roller shutters 25 or shades thus u201c building envelope u201d means one or more of any of the cladding elements 8 arrays or arrangements therefor additionally as it relates to all components u201c a u201d as used in the claims means one or more each module 6 would cover an exterior wall underlying surface the underlying surface 11 in this example is glass the frame of the module 6 is typically aluminum the louver blade array 8 and the roller shutters 25 are typically aluminum or painted steel both the louver blade array 8 and the roller shade 25 units can be coated on the outer facing surfaces with a coating material typically paints which reject or reflect solar energy the coating on the interior facing surfaces is a material which tends to not reflect heat thus saving the building from u201c feeling u201d the heat radiated from the louver blades themselves referencing now fig2 4 the building envelope is shown in part being comprised of curtain wall mullions 1 and vertical support mullions 2 the frames 2 a and 2 b forming each u shaped.