Installation Manual

Insert sliding clamp into
attachement bow and
rotate 90°, then secure
cab rail to underbody
rail with sliding clamp.
Clamps should be fully secured under
the radius section of the
underbody rail.
Tighten with 1/2” socket to 10 lb-ft.
Position bedrail on truck bed side 1/2” from inside of front bed
wall. NOTE: Make sure that both side rails are positioned
exactly the same distance from the truck bed.
Align the top of the underbody rail flush with the top of the truck
bed and secure the clamps as shown.
NOTE: Clamps should be located as close to the underbody rail
ends as possible.
1/2“
socket
10
lb-ft
10
lb-ft
Place tonno over
cab end of truck box.
NOTE: the cab rail
should lay over the front
of bed wall.
1
1/2”
2
3
Extang Corporation
5400 S. State Road
Ann Arbor, MI 48108
734 677-0444, Fax: 734 677-8409
Register your warranty at:
extang.com
Item No. 72000-30-1511 RH
©Extang Corp., 2015 Printed in U.S.A.
Carefully refold the tonno
without shifting its position
on the truck bed.
Unfold the tonno fully and
adjust position over the
truck bed for proper
cab/tail
alignment.
• 1/2” Socket Wrench
• 3/16” Allen Wrench

Summary of content (6 pages)