Front hoop of canoe rack for 2004 Ford F150 standard width 6.5 foot box. The rear should have the lower uprights and lower brace narrower to accomodate the narrowing of the bed in the back. This is deisnged to carry 2 Pelican Excursion 146 DLX boats with at least 6" to clear the bow of the boat withotu hitting the top of the cab. Uprights are made from 2x10 pressure treated. Upper carrier and cross brace are 2x4 pressure treated, and corner braces are 1/2" treated ply.