
12
3: MOUNTING UPRIGHTS
A. Set upright assembly in the desired front
position between rails.
B. Uprights should fi t snug in between rails. If
needed, adjust cross bar mounts until uprights
fi t snug.
Upright in
between rails
Depending on rail, perform one of the
following:
RAILS WITH MOUNTING CHANNELS:
A. Align channel nuts with bolt holes in
uprights.
B. Thread 3/8" x 3/4" hex bolts into channel
nuts on both sides and fi nger tighten.
NOTE:
Aluminum Pro Series and Vertical
Pro Uprights use 3/8" x 5/8" hex bolts.
3/8" x 3/4"
Hex bolts
Channel nuts
Upright mounting
holes
Mounting channel
C. Check for equal distance from closest
edge of box to upright. Adjust if distance to
box edge is unequal. Use a ratchet with 9/16"
socket to tighten bolts snug enough to prevent
slippage
.
D. Repeat for remaining uprights.
Same distance