Introduction
This manual provides detailed instructions for the assembly, operation, and maintenance of your Greesum 10x10FT Outdoor Storage Shed. Please read all instructions carefully before beginning assembly to ensure safe and correct installation. This heavy-duty steel storage shed is designed to provide secure, spacious storage for your tools, lawn mower, and outdoor equipment, offering superior strength and long-lasting weather resistance.
Safety Information
- Wear Gloves: Always wear protective gloves during installation to prevent cuts from sharp edges of metal components.
- Stable Surface: Install the shed on a flat, solid surface. A wooden platform is recommended for stability and moisture protection.
- Local Regulations: Before purchasing and installing, check with your local Homeowners' Association (HOA) for any specific rules or approvals regarding shed installation.
- Two-Person Assembly: Assembly is significantly easier and safer with two people.
- Secure Fasteners: Ensure all screws and fasteners are tightened securely to maintain structural integrity.
Parts List
Before beginning assembly, verify that all parts are present and undamaged. Refer to the included parts guide for detailed identification. Components are typically numbered for ease of assembly.
Common Fasteners
- F1: Screws (various quantities)
- F2: Screws with nuts (various quantities)
- F3: Screws for hinges (various quantities)
- F5: Screws for corner caps (various quantities)
- V1: Rubber nuts (80 pieces) - for preventing injuries from sharp screw ends.
- V2: Washers (various quantities)
Frame and Panel Components
- B1, B2, BL, BR: Base frame components
- W1A, W2A, W3A: Wall panels
- L1, L2, L3: Upper frame connectors for walls
- UP1, ULA, URA: Upper frame components for door area
- P1, P2, P3: Roof panels
- S2, S3, S4: Roof support brackets
- M3, M4: Roof trim pieces
- GC: Roof corner caps
- DL1, DR1: Door panels
- DX1: Door braces
- DF: Door frame bracket
- DG: Door latch mechanism
- DH: Door hinges
Assembly Instructions
Step 1: Assemble the Base Frame
Connect the base frame components (B1, B2, BL, BR) using screws (F1) as indicated in the diagram. Ensure all corners are securely fastened.

Image: Detailed view of the base frame assembly, showing components B1, B2, BL, BR and screw placement (F1).
Step 2: Install Wall Panels
Attach the wall panels (W1A, W2A, W3A) to the base frame using screws (F1) and washers (V2). Secure the upper frame connectors (L1, L2, L3) between the wall panels. Pay attention to the orientation of L1, L2, and L3; portions with holes should face inward.

Image: Side view of the shed during wall panel installation, showing the connection points to the base frame.
Video: Wall Part Instruction
Video: This video demonstrates the step-by-step process of assembling the wall panels and connecting them to the base frame, including proper screw and washer usage. Note: This video may feature a slightly different shed size (10x12) but the assembly principles are similar.
Step 3: Assemble the Roof
Attach the roof support brackets (S2, S3, S4) to the top of the wall structure. Then, place the roof panels (P1, P2, P3) onto the brackets and secure them with screws (F1) and washers (V2). Ensure the two P1 parts are aligned correctly. Install roof trim pieces (M3, M4) and corner caps (GC).

Image: The fully assembled Greesum storage shed, showcasing the completed roof structure.
Step 4: Install Doors
Assemble the door panels (DL1, DR1) with their braces (DX1). Attach the hinges (DH) to the door panels using screws (F3). Mount the assembled doors to the shed frame. Install the door latch mechanism (DG) and door frame bracket (DF).

Image: Front view of the Greesum storage shed, highlighting the double doors and their hardware.
Step 5: Final Touches and Safety
Install the rubber nuts (V1) onto the exposed screw ends inside the shed. This prevents injuries from sharp edges and provides a cleaner finish.
Video: Assembly & Honest Opinion of Greesum 10 x10FT Metal Outdoor Storage Shed
Video: This video provides a comprehensive overview of the shed assembly process and offers an honest opinion on the product's features and build quality.
Operating Instructions
- Opening Doors: Slide the door latch (DG) to unlock and pull the door handles to open. For wider access, the second door can also be opened by disengaging internal latches (if applicable).
- Closing Doors: Push the doors shut until they meet. Engage the door latch (DG) to secure the doors.
- Locking: The door features pre-drilled holes for a padlock (not included) to provide additional security for your stored items.
Maintenance
- Regular Cleaning: Clean the shed exterior periodically with mild soap and water to remove dirt and debris. Avoid abrasive cleaners that could damage the galvanized steel finish.
- Check Fasteners: Periodically inspect all screws and bolts to ensure they remain tight. Tighten any loose fasteners to maintain structural integrity.
- Ventilation: Ensure the air vents remain clear of obstructions to promote proper air circulation and prevent moisture buildup inside the shed.
- Rust Prevention: Although made from galvanized steel, inspect for any signs of rust, especially in areas where the coating might be scratched. Touch up with rust-inhibiting paint if necessary.
- Snow Removal: In areas with heavy snowfall, regularly clear snow from the roof to prevent excessive weight buildup, which could potentially damage the structure. The shed has a 6-inch snow-bearing capacity.
Troubleshooting
- Difficulty Aligning Panels: Ensure the base frame is perfectly level and square before attaching wall panels. Loosen screws slightly, adjust alignment, and then re-tighten.
- Leaking: Check all roof panel overlaps and screw points for proper sealing. Apply silicone sealant if necessary to any gaps. Ensure roof trim pieces are correctly installed.
- Door Malfunction: Verify that hinges are securely attached and not bent. Check that the door frame is square and not warped. Adjust the door latch for smooth operation.
- Instability: Ensure the shed is anchored to the ground using appropriate methods for your chosen base (e.g., ground stakes for soil, concrete anchors for concrete slabs).
Specifications
- Brand: Greesum
- Model Number: GS-406GY-820
- Color: Gray
- Material: Alloy Steel
- Product Dimensions: 122"D x 125.5"W x 76.4"H
- Item Weight: 120 Pounds
- Door Style: Single Hinged Door
- Water Resistance Level: Water Resistant
- Snow-Bearing Capacity: 6 inches
- Wind Resistance: 24-30 MPH
Warranty and Support
For any questions, missing parts, or assistance with assembly, please contact Greesum customer service. Refer to your purchase documentation for specific warranty details and contact information.





