1. Product Overview
The UNIKOO King Series UKS04-5576-MBL is a premium frameless stainless steel sliding shower door designed for modern bathrooms. It features 3/8" (10mm) certified tempered clear glass, offering both durability and a sleek aesthetic. The innovative design allows for easy, walk-in shower entry with a quiet sliding system.
Key features include:
- Highest Quality Materials: Constructed with 316 and 304 stainless steel, ensuring longevity and resistance to corrosion.
- Certified Tempered Glass: 3/8-inch-thick double certified clear tempered safety glass (SGCC Certified) for enhanced safety and easy cleaning.
- Frameless Design: Provides a contemporary and spacious feel to your shower area.
- Smooth & Quiet Operation: Features high-quality sliding rollers and slim top rails for effortless and silent movement.
- Reversible Installation: Can be configured for left or right-side opening to suit various bathroom layouts.

Figure 1: The UNIKOO King Series UKS04-5576-MBL frameless sliding shower door, showcasing its sleek matte black hardware and clear tempered glass.
Video 1: Overview of the UKS04 shower door, demonstrating its features and appearance in a showroom setting.
2. Safety Information
Please read all instructions carefully before installation and use. Failure to follow these instructions may result in injury or product damage. Always wear appropriate personal protective equipment (PPE), such as safety glasses, during installation.
For detailed safety guidelines, please refer to the official Safety Information PDF document available for this product. Professional installation is highly recommended.
3. Installation Guide
This section provides a step-by-step guide for installing your UNIKOO sliding shower door. Ensure you have all necessary tools and hardware before beginning.
Video 2: Comprehensive installation video for the UKS04 shower door, detailing each step of the assembly process.
3.1. Required Tools and Materials
Before starting, gather the following tools and materials:
- Spirit Level
- Silicone Sealant
- Pencil
- Power Drill
- Mallet
- Screwdriver
- Tape Measure
- 8mm (5/16") Drill Bits (Use 6mm drill bit for ceramic tiles)
- Hacksaw
- Safety Glasses

Figure 2: Essential tools and materials for the installation of your shower door.
3.2. Wall Bracket Installation
Use a spirit level to mark the desired height for the top rail. Drill holes according to the provided template and secure the wall brackets. Ensure they are perfectly level for proper door operation.

Figure 3: Overall dimensions of the UKS04-55X76 model, including model width, height, door width, and fixed panel dimensions.
3.3. Roller Assembly
Assemble the rollers onto the glass panels. These rollers are crucial for the smooth and quiet movement of the sliding door. Ensure all components are securely fastened.

Figure 4: Detail of the precision-machined rollers and rail, designed for smooth and quiet door operation.
3.4. Top Rail Installation
Attach the top rail to the installed wall brackets. Measure and cut the rail if necessary to fit your shower opening. Ensure the rail is level and securely fixed.
3.5. Fixed Panel Installation
Install the fixed glass panel. Secure it using the appropriate clamps or channels at the bottom and side. Ensure the panel is plumb and stable.
3.6. Sliding Door Installation
Carefully hang the sliding door panel onto the top rail rollers. Test the sliding mechanism to ensure it moves freely and smoothly.
3.7. Floor Guide Installation
Install the floor guide to ensure the sliding door remains aligned and stable. Mark and drill holes on the shower threshold, then secure the guide.

Figure 5: Illustration of the waterproof design, highlighting the threshold and clear plastic seal that helps keep water inside the shower unit.
3.8. Handle Installation
Attach the sleek design handle bar to the sliding glass panel. Ensure it is tightened securely for safe and comfortable use.

Figure 6: The elegant stainless steel handle bar, designed for easy installation and durability.
3.9. Adjustments for Uneven Walls
If your wall is not perfectly straight, it is recommended to acquire an additional U-channel to properly align the fixed panel. Additionally, make necessary adjustments to the plastic seal on the door side to ensure a watertight fit.

Figure 7: A view of the installed UNIKOO shower door, demonstrating its appearance in a finished bathroom setting.
4. Operating Instructions
To open or close the shower door, gently slide the movable glass panel along the top rail using the handle. The precision-engineered rollers ensure a smooth and quiet operation. Avoid forcing the door, as this may cause damage to the mechanism or glass.
5. Maintenance and Care
To maintain the pristine appearance and functionality of your UNIKOO shower door, regular cleaning is recommended. The 3/8-inch-thick tempered glass is treated with an innovative Easy-Cleaning Coating (EnduroShield) that repels water, soap scum, and grime, significantly reducing cleaning time by up to 90%.
5.1. Cleaning the Glass
- For daily cleaning, simply wipe down the glass with a soft cloth or squeegee after each use.
- For deeper cleaning, use a mild, non-abrasive glass cleaner. Avoid harsh chemicals, abrasive pads, or scouring powders, as these can damage the glass coating and hardware finish.
- Rinse thoroughly with water after cleaning to remove any residue.

Figure 8: Visual comparison demonstrating the effectiveness of the Easy-Cleaning Coating on treated glass versus untreated glass.
5.2. Hardware Care
- Wipe down all metal hardware (matte black stainless steel) with a soft, damp cloth.
- Do not use abrasive cleaners or harsh chemicals on the hardware, as this can damage the finish.
- Periodically check all screws and fasteners to ensure they remain tight. Tighten gently if necessary.
6. Troubleshooting
If you encounter any issues with your UNIKOO shower door, please refer to the following common troubleshooting tips:
- Door not sliding smoothly: Check the top rail for any obstructions or debris. Ensure the rollers are clean and free of buildup. Verify that the top rail is perfectly level.
- Water leakage: Inspect the PVC sealant strip along the bottom and sides of the door. Ensure it is properly seated and free from damage. Verify that the fixed panel and floor guide are securely installed and sealed. Adjustments for uneven walls (Section 3.9) may be necessary.
- Loose hardware: Gently tighten any loose screws or fasteners on the rollers, handle, or wall brackets. Do not overtighten.
If the problem persists, please contact UNIKOO customer service for further assistance.
7. Specifications
| Attribute | Detail |
|---|---|
| Brand | UNIKOO |
| Model Number | UKS04-5576-MBL |
| Size | 55" W x 76" H (Adjustable for 50"-55" W openings) |
| Color | Matte Black |
| Material | Stainless Steel (316 & 304) |
| Glass Thickness | 3/8" (10mm) |
| Glass Type | Certified Tempered Clear Glass (SGCC Certified) |
| Item Weight | 280 Pounds |
| Assembly Required | Yes |
| Product Dimensions | 0.4 x 55 x 76 inches |
8. Warranty and Support
UNIKOO is committed to providing high-quality products and exceptional customer service. For any shipping, sales, or technical questions you may have, the UNIKOO online consulting service is always accessible.
Please refer to your purchase documentation for specific warranty details. For direct support, visit the official UNIKOO website or contact their customer service team through the contact information provided at the time of purchase.




