The simple frame works fine as the metal roofing has ridges and gives plenty of rigidity to the awning. Pressure treated 1-1/2" X 3/4 " firring strips were used for the frame and held togetrer with 3/4" stainless steel #4 screws. The strut support is 18 ga galv metal drilled 3/16 " holes and bent 90 * , also using same screws to attach them.
Other Sizes: Medium Original