Dee Zee DZ1057 - Manual (Page 9)

Using the slots in the brace as a guide, drill a 1/4" hole at each mounting location.
Clamp the board to the brace to hold it in position.
Attach the running board to the angle brace using the 1/4" x 1" ribneck carriage bolt [G],
1/4" flat washer [J], and 1/4" hex nut [K]. Tighten using a 7/16" wrench or deep well socket.
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DZ 1057 7 of 8 8/7/2013