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Flip and slide the seats forward so you can gain access behind the seats.  

Remove the Jack and Jack Tools. Set the DU-HA (A) in the truck behind the seats. The 

notched area on the bottom of the DU-HA will fit around the Jack mount that is on the 

floor. The hole on the drivers side should line up with the insert for the jack tools.  You have 

3 options for anchoring the DU-HA into your truck. Option 1 is to use a Self-Tapping Screw; 

use this option if you want your DU-HA permanently attached in your truck. Option 2 is to 

use a Jack-Nut; use this option if you want to be able to remove and re-install your DU-HA 

in your truck. Option 3 is to use a thru-bolt; use this option for a more secure permanent 

installation. Once you have the DU-HA in the desired position secure the DU-HA to the truck 

using one of the three anchoring options. After installed re-install the Jack in the DU-HA.

Anchoring Option 1:

  Self-Tapping Screw     

Tools Needed:

           

//   

Socket – 1/4” 

     

//   

Socket Wrench or Drill 

Warning:

 Before drilling into the truck floor make sure the area where you are going to drill 

through is clear of any electrical wiring, fuel lines, tanks, and reservoirs. You will have 

to look under the vehicle to make sure there are no obstructions at the hole locations.      

Insert the Self-Tapping Screw (D) through a Washer – 1/4” (H) and the pre-drilled hole on 

the passenger side in the bottom of the DU-HA and screw through the carpet or vinyl and 

into the floor of the truck using a 1/4” Socket and Drill.  DO NOT over-tighten.  Secure the 

drivers side using an M8 x 30mm bolt (K) and 1/4” washer (H) by threading into the insert 

for the Jack Tools and tighten with a 13mm wrench. 

    

Anchoring Option 2:

  Jack-Nuts 

Tools Needed:

 

          

//   

Drill 

         

//  

Nail or Sharp Punch

   

//   

Socket – 7/16” 

          

//   

7/16” Drill Bit 

         

//  

Hammer 

   

//   

Socket Wrench

//  

Pliers

//  

13mm Wrench

   

//   

Phillips Screwdriver – #3       

//   

Jack-Nut Friction Wrench (supplied)

Warning:

 Before drilling into the truck floor make sure the area where you are going to drill 

through is clear of any electrical wiring, fuel lines, tanks, and reservoirs. You will have to 

look under the vehicle to make sure there are no obstructions at the hole locations.

 

With the DU-HA set in your desired position, mark the hole in the bottom of the DU-HA on 

the truck floor using a nail or sharp punch, on the passenger side only. Make sure the hole 

on the drivers side lines up with the insert in the truck for the jack tools. You will need to 

poke through the carpet and make a mark on the metal floor of the truck. Next remove 

the DU-HA and pull back the carpet or vinyl flooring to expose the metal floor. Find the 

previously made mark and drill a 7/16” hole.     

Prior to installing the Jack-Nut–1/4” (E), hold the Jack-Nut with a pliers, and using the 

phillips screwdriver, make a hole through the rubber on the Jack-Nut by pressing and 

twisting into the rubber on the head of the Jack-Nut–1/4” (E). Next insert the Bolt Hex 

Head – 1/4” x 2-1/2” (F) through the hole in the Jack-Nut Friction Wrench (J) and thread 

all the way into the Jack-Nut–1/4” (E). Place the Jack-Nut–1/4” (E) in the drilled hole 

(may 

need a hammer to tap into hole)

. Secure the Jack-Nut to the vehicle by tightening the Bolt 

Hex Head – 1/4” x 2-1/2” (F) using a Socket 7/16” and Socket Wrench, press firmly on the 

Jack-Nut Friction Wrench (J) and tighten Jack-Nut – 1/4” (E) until you see the rubber on the 

Jack-Nut starting to get squished. Do not over tighten (max torque = 41 in/lbs). Remove the 

bolt from the Jack-Nut–1/4” (E).             

Note:

 Jack-Nut Friction Wrench is only used to install Jack-Nuts.

 It does not take a lot of 

torque to break a Jack-Nut so it is best to use a 7/16” Socket and Socket Wrench. If using 

a drill with a 7/16” Socket, be very careful not to over tighten and strip out the Jack-Nut.  

2017-20

20

 Ford SuperDuty Regular Cab - 

Behind-the-seat Storage

Installation Instructions:

Installation Instructions

DU-HA, Inc. 

  //   

website: www.du-ha.com 

  //   

phone: 1.866.306.DUHA (3842) 

  //   

fax: 1.218.998.4013 

  //   

306 Saint Andrews Street South, Fergus Falls, MN 56537

1

2

A

B

Fits DU-HA Part Number

20115

DIVIDER – 20115

1

2

3

4

B

3

Jack-Nut

B

B

4

D

K

H

H

2

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