Lifetime Sentinel 6404 Owner's Manual And Assembly Instructions

OWNER’S MANUAL

with Assembly Instructions

8'x10' Outdoor Shed

Sentinel

8’ x 10’ Outdoor Shed

MODEL #6404

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products.

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Level Surface Notice:

Surface must be leveled before installation. We recommend building a level work space with a cement or patio style
surface. If the surface is not properly leveled, the Outdoor Shed will not assemble correctly. Proper surface leveling will
save you time in the long run, so please do not ignore this step.

Building Code Notice:

Consult all local building codes, as well as city and county ordinances, to ensure that the construction of the Outdoor
Shed does not require a building permit. Proper building permit documentation may be required in your neighborhood,
and it would be unfortunate to learn this after constructing the Shed.

Screwdriver Notice:

There is a 1/2” phillips head screwdriver bit included with the shed hardware. This bit can be used with any power
screwdriver or drill. The plastic pieces of your shed can be damaged by overtightening of screws. To avoid damage we
strongly recommend the use of a low-powered power screwdriver or a drill that has an adjustable clutch that is set on a
low torque setting. If neither is available, use a hand screwdriver. In any case, use caution to avoid overtightening the
screws.

Floor Puncture Notice:

Sharp objects may damage your fl oor. If resting sharp, heavy objects on your shed fl oor, place a block of wood between
the sharp object and fl oor.

Congratulations on your Lifetime® Outdoor Shed purchase. By following the instructions below, your new Lifetime shed

should provide you with years of service and enjoyment.

Cleaning and Care

The polyethylene walls and shelves are stain- and solvent resistant. To clean, use a mild soap and a soft-bristled brush. Abrasive

cleaning materials may scratch the plastic and are not recommended. Repair scratches or rust spots on the metal by sanding

the affected area lightly; using a rust preventative spray primer; and fi nally, spraying with a high-gloss spray enamel paint. Avoid

placing a direct heat source on or near surfaces unless using a heat barrier.

SAFETY INSTRUCTIONS

FAILURE TO FOLLOW THESE WARNINGS MAY RESULT IN SERIOUS INJURY OR PROPERTY DAMAGE AND WILL VOID

To ensure safety, do not attempt to assemble this shed without following the instructions carefully. Check entire box and
inside all packing material for parts and/or additional instruction material. Before beginning assembly, read the instructions
and identify parts using the hardware identifi er and parts list in this document. Proper and complete assembly, use and
supervision are essential for proper orientation and to reduce the risk of accident or injury.

WARRANTY.

• Do not use or store hot objects such as grills, blowtorches, welding equipment, etc. in the shed.

• If using a ladder during assembly, use extreme caution.

• Two capable adults are required for shed assembly. (It is also recommended that a third adult function as an
instruction reader.)

Most injuries are caused by misuse and/or not following instructions. Use

2

INSTRUCTION #1018238 8/28/2006

caution when using this shed.

Read This First!

Before Beginning Assembly:

A. Read the “Congratulations” letter on pages 4-5.
B. Remove Parts List from the center of these instructions and

make sure all parts are present and in good condition.

C. Find the color “Construction Tips” fl yer and refer to it

during assembly.

**Do Not Contact the Store!**

For Assistance, including missing or broken parts,

Call Customer Service at:

1 [phone]

** Customers outside of the U.S. or Canada, please contact the store for assistance. **

KEY

Indicates a helpful hint or
important note.

Refers you to a specifi c step
in the full-color Construction
Tips fl yer.

Two Adults Required for Assembly

( + one Adult suggested as an instruction reader)

7/16” 3/8”

(2) (1)

Step Ladder

Indicates that a hand
screwdriver is required
for a step.

Suggested Tools & Materials

(Not Included):

Adjustable

(1)

Power Drill * Work Light

Rubber Mallet

(1)

Box Knife

(1)

Pliers

Phillips Head

(1)

Flashlight

(2)

(1)

* see “Screwdriver Notice” on page 2

(1)

(1)

(1)

3

IMPORTANT! Please Read

Dear Valued Customer,

®

Outdoor Storage Shed! We

We would like to congratulate you on your purchase of a Lifetime
are confi dent that you have made the perfect choice and you will be very pleased with your new

storage solution.

This Outdoor Storage Shed is part of the family of brands created and manufactured by

®

Lifetime

Products, Inc. Like all of our products, you can be assured that the quality of your

Lifetime Outdoor Storage Shed is the best in the world! All of our sheds are made in the USA,
something that is very important to us. And, we back that quality up by off ering the best

warranty in the business – A 10-year warranty that covers everything on the shed… top to
bo om!

All of our sheds are built with the highest-quality steel and polyethylene parts. The design and
construction of our steel-reinforced double-wall panels is second to none. All of our exposed

steel parts and trusses are powder coated and we only use high-impact polyethylene plastic.
What makes polyethylene so special? It has superior strength and durability, and, it won’t crack

or degrade outdoors.

®

Outdoor Storage Shed, please

So now that you know the quality you are ge ing in a Lifetime
take the time to READ THIS INSTRUCTION MANUAL!

We have taken great care in providing the best possible form of instructions to help you put
your new Outdoor Storage Shed together. Before you get started, PLEASE read the following

preparation tips to help you get started!

We can assure you, your construction experience will be a lot more enjoyable if you do!

PREPARATION TIPS:

• The fi rst step is simple… RELAX! You have made a great purchase, but Rome was not built
in a day. Plan to spend a good part of your a ernoon pu ing together your fi ne Outdoor Storage
Shed. Our philosophy is, if it comes together quickly and easily, it surely will come apart quickly

and easily! Your Lifetime

®

Outdoor Storage Shed will surely last for years if you are patient, and

take all the time necessary to put it together as we have instructed.

• Grab a friend to join in on the fun! This is not a one-person endeavor. We have found that not
only will things go smoother if you have two or more people participating in the construction of

the shed, but it will go quicker as well. So, the more the merrier!

• Make sure you have all the tools necessary for constructing your new shed. We have included
a 1/2 “ Phillips head screwdriver bit that may be used with any power screwdriver or drill.
This bit is your friend… please use it. The plastic pieces of your shed may become damaged

by overtightening the screws. To avoid this damage, we strongly recommend the use of a low­powered power screwdriver or a drill that has an adjustable clutch that is set on a low-torque

4

- 1 -

se ing. If neither is available, use a hand screwdriver. If a hand screwdriver is all you have, take

several breaks… your wrist will need it!

• You will also need two small step ladders (when it comes time to do the roof!), a 7/16” wrench
and a 3/8” wrench.

• The small wood block in your shed box is there for a reason. DO NOT THROW THE WOOD
BLOCK AWAY, it is necessary for a aching the wall panels to the fl oor.

• Read through the entire instruction manual and “Construction Tips” insert before you start.
It’s always a great practice to get a feel for the fl ow of the process and to familiarize yourself with

the parts involved. But, try not to get ahead of yourself and start the process out of order.

• FOLLOW THE INSTRUCTIONS IN ORDER! Everything goes together in a certain order,

and we have learned what that correct order should be. In our state-of-the-art research and
testing facility, we have painstakingly created these instructions. The order of construction is

there for a reason, and some parts simply will not fi t if built out of order. Just follow along with
the order in the instructions and everything will fi t together and things will go very smooth.

• Refer to the color “Construction Tips” insert for the trickier construction spots. We have
identifi ed a few places during construction where it can get a bit tricky, that is why we included

the color insert. This full-color instruction extra was created to be er guide you through the
process. Use it and you will be a much happier Outdoor Storage Shed builder.

• YOUR SHED MUST BE BUILT ON A LEVEL SURFACE! If the spot you have chosen to place

your wonderful new Outdoor Storage Shed is not level, the shed will not assemble correctly!
We recommend a level cement or patio style surface. Your shed is meant to last a long time, so

provide the proper foundation for it before you start to build.

• Before you build it, make sure you are allowed to build it! Consult all building codes, as well
as city and county ordinances, to ensure that you do not require a building permit to construct
your Outdoor Storage Shed. Proper building permit documentation may be required in your

er your Outdoor Storage Shed is

neighborhood, and it would be quite unfortunate to learn this a
already built!

Now that you’re ready to begin the construction of your wonderful new Outdoor Storage
Shed, step back, take a deep breath, get yourself a large cold beverage and enjoy yourself. We
guarantee that a er spending the right amount of time in building your shed, you will be able to

enjoy it for years to come.

®

Thanks for choosing Lifetime

Outdoor Storage, and have fun!

- 2 -

5

1

Site Selection

The actual dimensions of your shed (at its widest and longest points) are 8’ x 10’. Be sure

1a

to select a site that will accommodate these measurements. The base of the shed is
slightly smaller than this, so you will need to create a level surface that is at least 93.5” x

118.25”. We recommend using a level cement or patio style surface. This will provide the
best long-term performance for your shed.

8’

93.5”

NOTICE: Shed Extension Kits are available for this shed.
Please consider possible shed expansion when planning the
site for your shed. See inside the back cover of this manual for
information on ordering Extension Kits.

10’

8’

118.25”

10’

Surface must be leveled before installation. If
the surface is not properly leveled, the outdoor

shed will not assemble or function correctly.
Proper surface leveling will save you time in the long
run, so please do not ignore this step.

Alternate Site Preparation

Wherever possible you should use the surfaces described above. When this is not possible, we
recommend you use one of the following options:

Note: Any platform or similar structure should be built above ground in order to avoid water pooling inside shed.

Item Qty.

OPTION 1: Wood Platform

Be sure you use lumber that is treated and approved for
outdoor use. Build outside frame to 93 1/2” x 118 1/4” outside
dimensions:

118 1/4”

2” x 4” x 90 1/2” treated board* 8
2” x 4” x 118 1/4” treated board* 2
48” x 93 1/2”’ Plywood (ACX)** 2
22 1/4” x 93 1/2” Plywood (ACX)** 1
16d 3” common nails 32
8d 1 1/2” common nails 36

* All lumber must be rated for outdoor use.
** Trim 4’ x 8’ sheets to this size.

93 1/2”

16”

16”

15.25”

To be sure to have studs
in the correct location to
nail plywood in the next
step, start measuring here
& measure from center to
center.

6

16”

16”

16”

Place the 2” x 4” x 90 1/2” boards

on the inside of the frame. Nail each

board in place with the 16d nails.

B

A

Square up the frame by measuring
from corner to corner. Measurement
A should equal Measurement B.

Place platform in the desired location. If platform does not
rest level on the ground, build up low points with loose dirt
until platform is stable.

Line up a large sheet of outdoor
rated plywood (48” x 93.5”) with

the end of the frame (same end

you measured from). Nail plywood

in place.

Place next large sheet.

Cut last sheet of plywood

to fi t remaining space

(22”x93.5”) on frame. Nail

plywood in place.

Drill 3 evenly spaced 1/2” drain

holes in plywood between each 2” x

4” joist.

OPTION 2: Filled Wood Frame

Be sure you use lumber that is treated and approved for outdoor use.
Cut outside frame to 8’ x 10’ outside dimensions:

Be sure that

Item Qty.

2” x 4” x 7’ 5” treated board* 2
2” x 4” x 10’ treated board* 2
8d 1 1/2” common nails 16
1” ‘L’ bracket 4
“Pea” gravel 9.8 cu. ft. (aprox.)
Leveling board (2” x 4” x 10’) 1

frame is level.

* Must be rated for outdoor use

10’

A

B

8’

Square up the frame by measuring from

corner to corner. Measurement A should

equal Measurement B.

Nail an L-bracket on each corner of
the frame with 8d nails.

Place platform in the desired location. If platform does not rest level on the ground, build up low points with
loose dirt or “Pea” gravel, until platform is stable.

Once all boards are level and do not wobble,
pack “Pea” gravel or dirt around the outside of
the frame, and slope away from frame.

Use aprox. 9.8

cu. ft. of “pea”

gravel.

Now fi ll the inside of the frame with “Pea” gravel. Use

a leveling board to scrape off extra fi ll material and to

level the surface.

7

Before Beginning!

Remove the Parts List from the center of this manual, and locate

color “Construction Tips” insert in box.

2

(as shown) and fi t tabs into slots and lay Center Floor
Panel fl at. Add next Center Panel (110) and last Outer
Panel (109).

3

Attach a Window Latch (HQ) above each corner of the Window
as shown. When tightening Screws (SS), ensure the Window
Latches slide freely.

second Window.

Assemble Floor

Lay Outer Floor Panel (109) fl at on the ground.

2a

Hold a Center Floor Panel (110) at an angle

1.

110

109

Assemble Window

Remove plastic sheeting from Window (AA) and slide

3a

Window into slot on the Window Wall Panel (125).

Do not overtighten. Insert Screw (TC) into the hole in the

3b

window. Set panel aside. Repeat steps 3a and 3b for the

2.

Sharp objects may damage your
floor. If resting sharp, heavy
objects on your shed fl oor, place a
block of wood between the sharp
object and fl oor.

110

SS (8)

HQ (4)

Hardware Bags:
1001632

CAUTION

3.

109

TC (2)

1015974
1004015

Screwdriver

Insert window
with bent edge at
top and pointing

away from the wall.

8

HQ

HQ

Place screw (TC) in this hole to

keep window from sliding up

too far. Insert until fl ush with the

window

4

under fi rst tab, then pull down on Corner Panel until tab snaps into place. Move block
under the next tab and repeat.

Assemble Front Corner

Fold Left Corner Panel (105). Fit tabs of panel into the front left corner (while

4a

facing shed) of your fl oor. Place a Wood Block (BC) under Floor Panel, directly

105

Place Wood Block (BC) directly
under the tab you are inserting. Snap
tabs into place one at a time.

Fold up edges of Corner Shelf (121). Line-up holes in Corner

4b

Shelf with top set of pre-made holes in Left Corner Panel and

secure with Screws (SS).

Corner Shelf should only be placed
in top set of holes. See inside the
back cover for information on

purchasing additional shelves.

121

Hardware
Bags:1001632

SS (4)

Screwdriver

Top holes

9

5

Assemble Left Wall and Back Corners

Snap Wall Panels (108) into place along the side of shed. Ensure

5a

holes line up and then secure panels together with Screws (SS).

NOTE: The Window Wall Panel (125) may be inserted into any side Wall
Panel position; however, you should place one Window Wall Panel off-

center. You will then have enough wall space for your shelving. See page

11.

Place Wood
Block (BC)

directly under
the tab you are
inserting. Snap tabs
into place one at a
time.

Do Not Over-Tighten Screws

1.

2.

SS (20)

Hardware Bags:
1001632

Second person
should apply

pressure on opposite
side of the wall for easy
insertion of screws.

Screwdriver

3.

Fold Right Corner Panel (104). Snap into place and secure with

5b

Screws (SS).

104

Place Wood Block (BC) directly under
the tab you are inserting. Snap tabs
into place one at a time.

10

NOTE: Shelving Locations

Keep in mind where you would like your shelving. You install shelving on Shelf Support Channels. The
Channels may be installed on the Window Wall Panel when Window Wall Panel is in any position. However,
you can only install the shelving on regular Wall Panels when those two Wall Panels are adjacent.

Here

Here

Window in
Left Position

Only Here

Window in
Middle Position

Here

Here

Window in
Right Position

Shelf Support Channels can also
be installed in the Window Wall
Panel, as shown.

11

Fold up edges of Corner Shelf (121). Line-up holes in Corner

5c

Shelf with top set of pre-made holes in Corner Panel and secure

with Screws (SS).

SS (4)

Corner Shelf should only be placed
in top set of holes. See inside
the back cover for information on

purchasing additional shelves.

121

Hardware
Bags:1001632

Screwdriver

Top holes

5d

(SS).

5e

Skip the back wall and fold the second Left Corner
Panel (105). Snap into place and fasten with Screws

105

Repeat step 5c for this Corner Panel.

Place Wood Block (BC) directly under
the tab you are inserting. Snap tabs
into place one at a time.

12