Another bit of info..instaltion instructions on website says to rip the boards so that they are 4 3/4 wide..my premade Gatorbak bunks from BCB the board width is4 1/2..had they have been 4 3/4, i would have had more of a problem when i centered them on the upright brackets..not trying to start a war, but you are left scratching your head when you load your boat after the install and it wont set down between the chines..i have been there..