PROCRAFT RP4B-5-BK: 4 space rack box with a 1/8" aluminum rack panel with an 18 ga steel back box that is powder coated black.
Rack panel dimensions are: 19" wide x 7" tall
Back box dimensions are:17-3/16" wide x 6-3/4" tall and 5" deep.
Inside dimensions are: 17-5/64" wide x 6-21/32" tall x 4-15/16" deep.