DuraMax Storage Shed Owner's Manual/ Instructions For Assembly
Storage Shed
Storage Shed
OWNER’S MANUAL /
Instructions for Assembly
Size 8’x 6’ with “Extension Kits”
Ver: 2.0
Patent #416.091
Your Total Solution To maintenance Free Storage Sheds.
• All Weather Durable PVC
• Won’t Dent, Rust, Rot or Mildew
• Never Needs Painting
• 61” Wide Double Doors
• Easy Assembly
• High Wind Tested
• Snow Load Tested 20lbs/sq.foot
• Pad Lock Ready (Lock not included)
• Wooden or Cement Foundation Needed
Available Kits
• Foundation Kit Available
• Modular 2.5’ Extension Kits Available
• 8’x6’ Window Kits Available
Requires two people and takes about 4-5 hours for Installation.
PART 1
ASSEMBLING SHED WITH EXTENSION KIT
PART 2
ADDING EXTENSION KIT TO EXISTING SHED
Note: For shed with extension use this manual only.
Customer
Service Hotline
(800) 483-4674
www.uspolymersinc.com
Call us for any missing or damaged parts.
Do not return to the store.
Duramax Storage Shed
Limited Fifteen Year Warranty
U.S. Polymer Inc. will send a replacement part free of charge, in the event of material defects and or
workmanship for a period of fifteen years from the date of purchase.
This warranty is extended only to the original purchaser. A purchase receipt or other proof of date of original
purchase will be required before warranty service is rendered. In no event shall we pay the cost of flooring,
labor, installation or any other costs related thereto.
This warranty only covers failures due to defects in material or workmanship which occurs during normal
use and does not extend to color change arising due to normal weathering or to damage resulting from
misuse or neglect, commercial use, failure to follow assembly instructions and the owner’s manual (including
proper anchoring of the shed), painting, forces of nature and other causes which is beyond our control.
Claims under this warranty must be made within the warranty period by calling 1-800-483-4674 or mail in
a dated sales slip and clear photograph of the part to:
U.S. Polymers, Inc.
6915 Slauson Avenue
Commerce, CA 90040
We reserve the right to discontinue or change components. If a component has been discontinued or is
not available, U.S. Polymers, Inc. reserves the right to substitute a component of equal quality as may be
compatible.
Limits and Exclusions
There are no express warranties except as listed above. The warrantor shall not be liable for incidental or
consequential damages resulting from the use of this product, or arising out of any breach of this warranty.
All express warranties are limited to the warranty period set forth above. Some states do not allow the
exclusion or limitation on how long an implied warranty lasts, so the above limitations may not apply to
you.
This warranty gives you specific legal rights and you may also have other rights which vary from state to
state and country to country.
8’ x 6’ Parts List
Note: Check all parts prior to installation.
CODE DESCRIPTION QTY
B1LB FRONT ‘U’ CHANNEL LEFT 1
B1RB FRONT ‘U’ CHANNEL RIGHT 1
B2B SIDE ‘U’ CHANNEL 2
B21 BACK ‘U’ CHANNEL LEFT 1
B22 BACK ‘U’ CHANNEL RIGHT 1
CMB MIDDLE COLUMN 4
CCB CORNER COLUMN 4
CDLB LEFT DOOR COLUMN 1
CDRB RIGHT DOOR COLUMN 1
CB1B FRONT CENTER BAND 2
CB2B SIDE CENTER BAND 2
CB3B BACK CENTER BAND SHORT 1
CB3XB BACK CENTER BAND LONG 1
CB4B FRONT CROSS CENTER BAND 2
RS1XB RS1 ROOF STRUCTURE 4
RS2B RS2 ROOF STRUCTURE 4
RS3B RS3 ROOF STRUCTURE 2
RS4XB RS4 ROOF STRUCTURE 2
RS5B RS5 ROOF SRTUCTURE 4
RS8B RS8 ROOF STRUCTURE SUPP. LONG 4
RS9B RS9 ROOF STRUCTURE SUPP. SHORT 4
MJ MIDDLE JOINING SUPPORT 3
RS10B RS10 ROOF STRUCTURE SUPPORT 2
RS11B RS11 ROOF STRUCTURE SUPPORT SHORT 1
RS12B RS12 ROOF STRUCTURE SUPPORT LONG 1
RS14B SAGGING SUPPORT 8
DSH DOOR STOPPER HORIZONTAL 1
SP SIDE PANEL 7
FPLB FACIA PANEL LEFT 2
FPRB FACIA PANEL RIGHT 2
RP ROOF PANEL 4
RRS RIDGE COVER 2
DL LEFT DOOR 1
DR RIGHT DOOR 1
FSP FRONT SIDE PANEL 2
ACCESSORIES
CODE DESCRIPTION QTY
FDCL DOOR COLUMN FITTING LEFT 1
FDCR DOOR COLUMN FITTING RIGHT 1
FCC CORNER COLUMN FITTING 4
FMC MIDDLE COLUMN FITTING 4
FCB CENTER BAND FITTING 4
RJ 90 DEGREE JOINT 4
PPG ROOF PLUG w/WASHER 64
PIN ROOF PIN 64
EPS END PLUG SQUARE 4
CBC CENTER BAND COVER 1
S1 DIA. 4.2 x 16mm. (5/32” x 5/8”)
SHEET METAL SCREW 168
S2 DIA. 4.2 x 32mm. (5/32” x 1 1/4”)
SHEET METAL SCREW 8
S7 DIA. 4.2 x 10mm. (5/32” x 3/8”)
SHEET METAL SCREW 8
SAGGING SUPPORT (RS14B)
LEFT DOOR COLUMN
(CDLB)
CORNER COLUMNS (CCB)
ROOF STRUCTURES (RS 1XB, 3B, 8B, 9B)
(CB- 1B, 2B, 3B, 3XB, 4B), (MJ)
ROOF STRUCTURE (RS5B)
ROOF SUPPORT (RS2B)
(RS10B)
CENTER BAND FITTING
(FCB)
DOOR COLUMN FITTING
(FDCL)
RIGHT DOOR COLUMN
(CDRB)
MIDDLE COLUMNS (CMB)
U-Channels (B1LB)(B1RB)
(B21) (B22) (B2B)
DOOR STOPPER (DSH)
ROOF SUPPORT (RS4XB)
(RS11B) (RS12B)
MIDDLE COLUMN FITTING
(FMC)
DOOR COLUMN FITTING
(FDCR)
Tools You Will Need
Cordless Drill - Philips Head
Hammer or Rubber mallet
Carpenters Square
8’ Step Ladder
Adjustable pliers
Level - 3ft.
Tape Measure
Caulk Gun
Waterproof Clear Silicon
Sealant
Hand Gloves
CORNER COLUMN FITTING
(FCC)
CENTER BAND COVER (CBC)
ROOF PIN (PIN)
PVC 90 DEGREE JOINT
(RJ)
END PLUG SQUARE (EPS)
ROOF PLUG WITH
WASHER (PPG)
8’ x 6’ Exploded View
RRS
RRS
RP
CMB
FPRB
CMB
CB3XB
FPLB
RS2B
RS4XB
RS3B
RP
RS10B
RS5
MJ
RP
RS5
RS2B
RS1XB
RS5B
RS11B
RS5B
RS9B
CB3B
FPLB
RS2B
RS12B
RS4XB
MJ
DSH
RS10B
RS8B
RP
RS3B
CCB
RS2B
RS1XB
FPRB
CMB
CB2B
CMB
CB2B
CCB
B2B
B21
CCB
B1LB
B22
CB1B
CB4B
CB1B
B1RB
CDLB
B2B
CCB
CB4B
FSP
CB1B
CDRB
FSP
DR
DL
One Extension Parts List
Note: Check all parts prior to installation.
CODE DESCRIPTION QTY
EXTL EXTENSION ‘U’ CHANNEL LEFT 1
EXTR EXTENSION ‘U’ CHANNEL RIGHT 1
CMB MIDDLE COLUMN 2
CB3LB BACK CENTER BAND LONG 2
RS3SB RS3 ROOF STRUCTURE SHORT 2
RS4B RS4 ROOF STRUCTURE 2
RS6B RS6 ROOF STRUCTURE 2
RS7B RS7 ROOF STRUCTURE 2
RS11B RS11 ROOF STRUCTURE SUPPORT SHORT 1
RS12B RS12 ROOF STRUCTURE SUPPORT LONG 1
RS13B RS13 ROOF STRUCTURE 8
RS14B SAGGING SUPPORT 4
SP SIDE PANEL 2
RP ROOF PANEL 2
RRS RIDGE COVER 1
MIDDLE COLUMN FITTING
(FMC)
ROOF STRUCTURES
(RS3SB) (CB3LB)
ROOF STRUCTURE
(RS6B) (RS7B) (RS13B)
MIDDLE COLUMNS (CMB)
U-Channels (EXTL) (EXTR)
ROOF SUPPORT (RS4B)
(RS11B) (RS12B)
ACCESSORIES
CODE DESCRIPTION QTY
FMC MIDDLE COLUMN FITTING 2
PPG ROOF PLUG w/WASHER 16
PIN ROOF PIN 16
S1 DIA. 4.2 x 16mm. (5/32” x 5/8”)
SHEET METAL SCREW 40
S3 M4 x 10mm. (M5/32” x 3/8”)
MACHINE SCREW WITH NUT 62
ROOF PIN (PIN)
SAGGING SUPPORT (RS14B)
ROOF PLUG WITH
WASHER (PPG)
Exploded View with One Extension
RS3SB
RS6B
RS13B
RS13B
RS4B
RS7B
RS13B
RS12B
RS4B
RS3SB
RS13B
CMB
RS11B
RS13B
CMB
CB3LB
EXTR
CB3LB
EXTL
A. Foundation & Base Frame
PART 1: Assembling Shed With Extension Kit
Note: It is important that these instructions
are followed step by step.
DuraMax must be installed on a level wooden platform
or a level concrete foundation.
Note
Wooden platform is extra and is not included.
Don’t install under windy conditions.
Parts needed:
(1) U channel Front left (B1LB)
(1) U channel Front right (B1RB)
(1) U channel Back (B21)
(1) U channel Back (B22)
(2) U channel Side (B2B)
(22) Dia. 4.2 x 16mm Screws (S1)
Parts needed For Each Extension:
(1) Extn. U channel left (EXTL)
(1) Extn. U channel right (EXTR)
(6) Dia. 4.2 x 16mm Screws (S1)
1. Use pressure treated wood studs 2” x 4”(5 x 10cm)
to build a foundation structure that has an outside
dimension of 65” x 96” (1651mmx2438.4mm).
1a. Use pressure treated wood studs 2” x 4”(5 x 10cm)
to build a foundation structure that has an outside
dimension of 32” x 96” (812.8mm x 2438.4mm) for each
extension.
OR 1b. Use pressure treated wood studs 2” x 4”
(5 x 10cm) to build a foundation structure that has an
outside dimension of 97” x 96” (2463.8mm x 2438.4mm)
for shed with one extension.
Wooden Platform (Not Included)
The following are a list of lumber and sizes you will need.
Pressure T reated - Wood Studs: Exterior Grade (CDX):
4ea 2” x 4” x 89” (50 x 88.9 x 2260.6mm) 3/4” 19mm plywood
2ea 2” x 4” x 65” (50 x 88.9 x 1651mm) 1ea 3/4” x 48” x 96”
(19 x 1219.2 x 2438.4mm)
1ea 3/4” x 17” x 96”
(19 x 431.8 x 2438.4mm)
L-Brackets: 4ea
Wooden Platform for Each Extension (Not Included)
The following are a list of lumber and sizes you will need.
Pressure Treated - Wood Studs: Exterior Grade (CDX):
2ea 2”x4”x89” (50 x 88.9 x 2260.6mm) 3/4” (19mm) plywood
2ea 2”x4”x32” (50 x 88.9 x 812.8mm) 1ea 3/4” x 32” x 96”
(19x812.8x2260.6mm)
L-Brackets: 4ea
L- BRACKET
32” (812.8mm)
11 1/2” (292.1mm)
20 ” (508mm)
65” (1651mm)
L- BRACKET
19 1/2” (495.3mm)
96” (2438.4mm)
Foundation Structure
L- BRACKET
L- BRACKET
Note
Lay 2”x 4” (5cm x 10cm) Flat
2. Using exterior grade CDX 3/4” (19mm) plywood, cut
and fit together the sheets to form solid plywood floor
as shown. Foundation must be square and level.
3. Start with U-Channel bases (B21) & (B22) to insure
a quick and accurate layout.
Position all bases (B1LB, B1RB, B2B) on wood
foundation. It is critical that you allow 61 1/4” (1556mm)
between front bases (B1RB) and (B1LB) for door
placement. Measure in all directions as shown in fig.1.
Make sure the U-channel assembly is a perfect square.
3a. For each extension add one (EXTL) & (EXTR) in
the back side, moving (B21) & (B22) backwards.
1
32” (812.8mm)
17” (431.8mm)
48” (1219.2mm)
EXTL
B2B
92 1/4” (2343mm)
B1LB
Left Side
96” (2438.4mm)
Plywood Floor
B21
92 1/4” (2343mm)
92 1/4” (2343mm)
92 1/4” (2343mm))
61 1/4” (1556mm)
Door Opening
Fig.1
U-Channel Layout
B22
92 1/4” (2343mm)
Right Side
EXTR
92 1/4” (2343mm)
B2B
B1RB
4. Using a carpenters square, line up all corners.
S1
Secure base to wood foundation using (S1) screws
Concrete foundation
4b. Shed or shed foundation should be placed
on concrete footing by use of anchor bolt and nut.
Using a carpenters square, line up corners. Align
U-Channel base, mark the concrete through the
holes in the base and drill concrete with 1/2” (dia.
12.5mm) concrete bit to accept anchor bolts to a
1 3/4” (44mm) depth. Replace base and secure
with 1/4” x 1 1/2” (M6 x 40mm) anchor bolts.
(not provided)
B. Walls & Columns
B22
EXTR
Note
All panels are clearly marked and care should be
taken to use the correct one.
Parts Needed:
(4) Corner Column (CCB)
(1) Left Door Column (CDLB)
(1) Right Door Column (CDRB)
(4) Middle Column (CMB)
(7) Side Panels (SP )
(2) Front Side Panels (FSP )
(2) Front Center Band (CB1B)
(2) Side Center Band (CB2B)
(1) Back Center Band short (CB3B)
(1) Back Center Band long (CB3XB)
(2) Front cross center band (CB4B)
(1) Middle Joining Support (MJ)
(4) Center Band Fitting (FCB)
(1) Center Band Cover (CBC)
1.Slide right door column (CDRB) into the U-Channel
Base (B1RB) on the right side of the door. Line up
the pre-drilled holes on (CDRB) Column with predrilled holes on U-Channel Base. Secure with two
(S1) screws from inside.
(See blowup detail fig.1)
Parts Needed For Each Extension:
(2) Middle Column (CMB)
(2) Side Panels (SP )
(2) Back Center Band long (CB3LB)
CDRB
CDRB
2
fig.1
CDRB
B1RB
Right
B1RB
Inside
2. Insert the front side panel (FSP ) into the groove
0utside
S1
of column (CDRB). Start at the bottom of the panel at
an angle then push into place.
Always place panels into frame at an angle
Note
on top and slide in sideways and downward
for easy insertion.
CDRB
FSP
FSP
Note
Make sure panels are right side up
with panel shingles facing down.
Check the stamped label on top.
of all panels.
3. Slide corner column (CCB) into side panel
(FSP ) pushing the column to the side panel.
FSP
CCB
B1RB
CDR
CDRB
CCB
Inside
FSP
4. Working outside use (S1) screws to secure
column to bases (B1RB) and (B2B).
3
Inside
FSP
CCB
B2B
B1RB
5.To stabilize the front panel attach the front center
Inside
CCB
CDRB
B1RB
CB4B
CB1B
1&3
2
CB4B
B1RB
CDRB
CB4B
CB1B
Inside
CB1B
CDRB
CCB
3
1&2
FSP
CB1B
CCB
CB1
B
FCB
CCB
FCB
band right (CB1B). Start with the center band fitting.
Fix to corner column (CCB) with (S2) screws. To
continue See figures (fig.1) (fig.2) and (fig.3).
Tip
To insure easy assembly Locate
the identification number of each
part.
CB1B
Fig.1: Use (S2) screw.
Fix (FCB) to (CCB).
Leave it loose.
S2
S1
Fig.2: Use (S1) screw.
Fix (CB1B) to (FCB).
S1
CDRB
Fig.3: Use (S1) screw.
Fix (CB1B) to (CDRB).
6. Attach center band (CB4B) to door column
(CDRB) and base channel (B1RB).
S1
Fig.1: Use (S1) screw.
Fix (CB4B) to (CDRB)
4
Fig.3: Fix the (EPS) at the end
of (CB1B) & (CB4B).
CB1B
CB4B
EPS
EPS
CB4B
S1
Fig.2: Use
(S1) screw.
Fix (CB4B) to
base (B1RB)
7. Assemble back center bands (CB3B) and (CB3XB) with middle
joining support (MJ). Use (S1) screws.
CB3B
CB3XB
MJ
CB3B
S1
MJ
CB3XB
8. Assemble the center bands (CB2B) & (CB3LB) with (S3) screws with nuts. Follow Overlapping Method
shown below.
Make 2 sets.
Add one (CB3LB) for each extension.
CB3LB
CB2B
Overlapping Method
For Center Band, Roof structure (RS3B) & (RS3SB).
TIP
Step 1
Use a hammer to
align the holes.
S3
Step 3
Step 4
Step 2
5
Step 5
CCB
EXTR
B22
EXTR
CCB
0utside
S1
B22
9. Working from inside, continue connecting the side
B2B
CMB
S1
panels (SP ) and columns (CMB) in sequence along
(B2B) & (EXTR) base. Use (S1) screws to fix columns
to base.
9a. For each extension add one side panel (SP ) and
one middle column (CMB) in extension base U-channel
(EXTR) & (EXTL).
10. Slide corner column (CCB) into side panel (SP )
pushing the column to the side panel.
EXTR
CCB
CMB
CMB
Inside
11. Working from outside use (S1) screws to
secure the column to bases (B22) and (EXTR).
6
Inside
12. Stabilize the side panels with center bands (CB3LB)
CMB
CB3LB
CMB
CB3LB
CMB
B2B
CCB
CB3LB
CB1A
CCB
FCB
CB1B
CCB
FCB
CCB
FCB
& (CB2B). Fix the center band fitting (FCB) to corner
column (CCB) See Fig.1
Follow the Fig. 2, 3, 4 & 5.
CB3LB
CB2B
S2
Fig.1: Use (S2)
screws. Fix (FCB)
to (CCB). Leave it
loose.
S1
CB2B
S1
CB2B
Fig. 2 : Use (S1) screws.
Fix (CB2B) to (FCB)
and (CB1B).
S1
1&5
EXTR
4
Inside
3
2
CB2B
S1
CB3LB
Fig.3: Fix to (CMB)
with (S1) screw.
7
Fig.4: Use (S1)
screws. Fix (CB3LB)
to (CMB) columns.
Fig.5: Use (S1)
screws. Fix (CB3LB)
to (FCB).
13. Continue connecting the back panels and columns
CMB
CMB
CCB
B21
CCB
EXTL
S1
CMB
CCB
CMB
CCB
B21
EXTL
in sequence along base (B22) and (B21). Fix columns
to base with (S1) screws.
14. Fix the corner column (CCB) to last panel and
base.
S1
SP SP SP
B21
Back Wall
B22
15. Working from outside use (S1) screws to secure
the corner column (CCB) to bases (B21) and (EXTL).
SP
Inside
SP
8
Outside
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