Product Manual
©2015 KNAACK LLC
3
Note:
• If your truck bed is constructed of aluminum, use zinc rich primer to coat drilled holes.
• If installing the box on top of a stake bed, disregard these instructions. Mount the box with the bottom fully supported or structural
damage will occur to the box.
• When installing in a pickup bed, the box must be installed per these instructions using the mounting legs supplied. This box must
never be bolted to a ladder rack or structural damage will occur to the box.
• To prevent rust from occurring, touch-up any drilled holes.
STEP 1
Mark the Box
Park the vehicle as level as possible.
Turn the box over, and at each end of the box, mark a 6" long line 7/8" in from and parallel to the end. Start the line at the front
of the bottom.
For Models 272-3-02, 290-3-02, 291-3-02, 296-3-02, 297-3-02, 372-X-02, 390-X-02, 391-X-02, 396-X-02,
mark a 6" long line centered side to side on the box, 12" apart as shown in the gure below.
Typical unless state
beds interfere - see
instruction text
FRONT OF BOX
6" long line-
7/8" in from
end of box
Line marked even with bed lip
6" long lines centerd side to side 12" apart*
Mark this line even
with bed lip*
3/8" Holes
6" long line-
7/8" in from
end of box
*Only for Models 272-3-02, 290-3-02, 291-3-02, 296-3-02,
297-3-02, 372-X-02, 390-X-02, 391-X-02, 396-X-02
INSTALLATION INSTRUCTIONS