Installation Manual

Stick each one of the rubber filler strips to the bed
rail, adjacent to each rail spacer (black piece with
clamp written on it), prior to installing the mount-
ing rail. Tip : Lay the cover mounting rail on top of
the truck bed rail, drain tube towards the cab, to
help indicate position of the filler strips. The filler
strips should be mounted on the lower portion of
the bed rail, Figure 1.
Attach both left and right side rails to the truck
bed. The end of the mounting rail with the
drain tube fitting will go towards the cab of the
truck.
Position the top edge of the mounting rail flush
to 1/8" above the top edge of your truck bed
rail, Figure 1 & 2. Using three (3) clamps per side
attach the rail to the bed, position the clamps
adjacent to each of the black rail spacers. (Tip:
Mount the center clamp first but do not tighten
completely. This will give you the ability to
adjust the rail as the outer clamps are attached)
Tighten the clamps using a 1/2” wrench or
socket, Photo A.
Note: If you discover your truck will not allow you
to position a clamp adjacent to the spacer, simply
slide the spacer forward or back as needed.
Install the Bulkhead Seal to the front rail of the
truck bed and cut to length.
Truck Specific
Clamp Assembly
Truck Bed Rail
Rail Spacer
Cover Mounting Rail
Rubber Filler
Strip
Warning! Do not overtighten the clamp
assembly. A torque wrench is not necessary. If
preferred, torque is apx 75 inch lbs.
Warning! Clamps must be checked periodically
for tightness. Failure to do so could result in
damage to you or your property.
© 2015 UnderCover, Inc.
All rights reserved.
MODEL SPECIFIC GUIDE
GM Applications
2
Attach Side Mounting Rails
UnderCover, Inc.
P.O. Box 620
Rogersville, MO 65742
[phone]
[phone]
www.undercoverinfo.com