1. Introduction
This manual provides comprehensive instructions for the assembly, operation, and maintenance of your Keter Cortina Mega 2020L Outdoor Storage Box. Please read this manual carefully before assembly and retain it for future reference. This storage box is designed for outdoor use, offering a large capacity for various items such as garden tools, outdoor equipment, and waste bins.
Figure 1: Front view of the Keter Cortina Mega 2020L Outdoor Storage Box in anthracite grey.
2. Safety Information
Observe the following safety precautions during assembly and use:
- Ensure all parts are present and undamaged before beginning assembly.
- Assemble on a flat, level surface to prevent structural instability.
- Keep children and pets away from the assembly area.
- Do not climb on or stand inside the storage box.
- Do not store hazardous materials, flammable liquids, or heat sources inside the box.
- Secure the box to the ground if located in an area prone to strong winds.
- Always ensure the lid is properly closed to prevent water ingress and secure contents.
3. Package Contents
Verify that all components are included in your package. Refer to the assembly diagram for part identification.
- Side Panels (2)
- Back Panels (2-3, depending on design)
- Front Doors (2)
- Lid Panels (2)
- Floor Panel (1)
- Lid Support Mechanism (Gas Struts, Hinges)
- Locking Latch Mechanism
- Hardware Pack (Screws, bolts, nuts, washers)
- Assembly Instructions
4. Setup and Assembly Instructions
Assembly typically requires two people and basic tools such as a screwdriver. Follow these steps carefully:
4.1. Prepare the Site
Choose a flat, level, and stable surface for the storage box. Ensure adequate space around the box for assembly and future access.
Figure 2: Dimensional diagram of the Keter Cortina Mega storage box, showing external and internal measurements.
4.2. Assemble the Floor and Side Panels
- Place the floor panel on the prepared surface.
- Attach the side panels to the floor panel, ensuring they slot securely into the designated grooves.
- Secure the side panels using the provided screws and fasteners.
4.3. Install the Back Panels
- Slide the back panels into the grooves of the side panels.
- Ensure a tight fit and secure with screws as indicated in the assembly diagram.
4.4. Attach the Front Doors
- Hinge the front doors to the main structure. Ensure the hinges are correctly aligned and secured.
- Test the door movement to ensure smooth opening and closing.
4.5. Assemble the Lid and Support Mechanism
- Attach the lid panels to the top of the structure using the provided hinges.
- Install the gas struts (lid support mechanism) as per the diagram. These assist in opening and holding the lid open.
- Ensure the lid opens and closes smoothly and stays open when lifted.
Figure 3: Detail of the gas strut mechanism, which assists in lifting and holding the lid open.
4.6. Install the Locking Latch
- Attach the locking latch mechanism to the front doors as shown in the instructions.
- Test the latch to ensure it secures both doors effectively. A padlock (not included) can be added for enhanced security.
Figure 4: Detail of the integrated latch mechanism on the front doors, designed for padlock compatibility.
5. Operating Instructions
5.1. Opening and Closing the Lid
To open the lid, gently lift it upwards. The gas struts will assist in the lifting motion and hold the lid in an open position. To close, pull the lid down firmly until it latches securely.
5.2. Opening and Closing the Doors
To open the front doors, unlatch the central locking mechanism and pull the handles outwards. To close, push the doors shut and engage the central latch. For added security, a padlock can be inserted into the latch mechanism.
5.3. Using for Waste Bins
The storage box is designed to accommodate multiple waste bins. Chains are provided to attach to the bin lids, allowing them to open automatically with the storage box lid for convenient access.
Figure 5: The storage box shown accommodating three 240L waste bins, demonstrating its large capacity.
5.4. Internal Storage
The spacious interior can store various items. An optional shelf can be installed for better organization (shelf may be sold separately or included depending on the specific model variant).
Figure 6: Interior view of the storage box, illustrating the potential for internal shelving to organize items.
6. Maintenance
The Keter Cortina Mega storage box is designed for minimal maintenance due to its durable polypropylene construction and UV treatment.
- Cleaning: Clean the exterior and interior surfaces with a mild soap solution and a soft cloth or sponge. Rinse thoroughly with water. Avoid abrasive cleaners or harsh chemicals.
- UV Protection: The material is UV-treated to resist fading and degradation from sun exposure. No additional UV protection is typically required.
- Hinges and Struts: Periodically check hinges and gas struts for smooth operation. Lubricate with a silicone-based spray if necessary.
- Drainage: Ensure the floor remains clear of debris to allow for proper drainage and prevent water accumulation.
7. Troubleshooting
- Lid does not close properly:
- Check for obstructions inside the box or along the lid's closing path. Ensure the box is on a level surface, as uneven ground can cause misalignment.
- Doors do not align or close securely:
- Verify that the box is assembled on a level surface. Recheck hinge connections and ensure all screws are tightened. Adjust the position of the latch mechanism if possible.
- Water ingress:
- Ensure the lid and doors are fully closed and latched. Check for any gaps or damage to the panels. While the box is waterproof, extreme weather conditions or improper closure can lead to minor leaks.
- Gas struts not holding lid open:
- Inspect the gas struts for damage or wear. Ensure they are correctly installed according to the assembly instructions. If damaged, contact customer support for replacement parts.
8. Specifications
| Brand | Keter |
| Model Number | 17212413 |
| Color | Anthracite Grey |
| Material | Polypropylene (UV-treated, water-resistant and robust) |
| Product Dimensions (L x W x H) | 190.5 cm x 109.3 cm x 132.5 cm (75"L x 43.03"W x 52.17"H) |
| Capacity | 2020 Liters |
| Item Weight | 56.4 Kilograms (124.1 pounds) |
| Special Features | Heavy Duty, Manual Opening, UV-Blocking, Water-Resistant, Waterproof, Floor Included |
| Closure Type | Latch (Padlock compatible) |
| Recommended Use | Outdoor Storage |
9. Warranty and Support
Keter products are manufactured to high standards and are designed for durability. For specific warranty information, please refer to the documentation included with your purchase or visit the official Keter website. For customer support, replacement parts, or further assistance, please contact Keter customer service through their official channels.





