This sheet metal side extension will provide an additional 3' of coverage for one side of your 20' long carport. The actual roof of your carport will extend a minimum of 1' over the edge. The side extension pieces will not extend past the frame.
The sheet metal is available in widths of 3'. When enclosing the side completely just order the correct amount of 3'W extensions to cover the sidewall height of your metal carport.
This accessory must be purchased with a metal carport kit and can not be sold separately.
In some cases you may need to trim the sheet metal to match your metal carport sidewall height.