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Karcher Rhodos Lever Door Handle Cosmos Black ER28 - OS 83
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Karcher Rhodos Lever Door Handle Cosmos Black ER28 - OS 83
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Delivery Information
| Delivery Time Frame | Delivery Information |
| Next Working Day By 1PM | When an order is placed by 3pm for next working day on certain items |
| Standard Delivery | Usually delivered in 2 to 4 working days |
| Delivery Charges | |
| UK Mainland | Prices start at £3.95 for very small items, £6.50 for small, £9.50 for medium and £20 for large/long items |
| Scottish Highlands & Islands, Northern Ireland & Ireland | Prices from £30, please see our delivery page for more info. |
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£58.01
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(Save 34%)
£48.34
Excl. VAT
£38.40
Incl. VAT
£32.00
Excl. VAT
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Description
Architectural Hardware
Karcher Rhodos Lever Door Handle Cosmos Black ER28 OS 83
Architectural professionals frequently demand hardware that bridges the gap between minimalist aesthetic appeal and long-term functional stability, especially when designing for high-traffic commercial environments or modern residential spaces. The Rhodos lever on a round rose offers a sophisticated solution to these requirements, providing a sleek, modern profile that integrates into diverse interior styles while maintaining a comfortable, ergonomic grip that users will appreciate daily.
Crafted with a commitment to build quality, this handle features a specialised powder-coated Cosmos Black finish that offers superior resistance to surface scratches and general corrosion. By utilizing a solid 3-piece fixing rose system, the handle ensures a secure connection to the door substrate, which prevents the loosening often associated with inferior hardware after months of intensive use in busy office settings or family homes.
52mm
ROSE DIAMETER
70mm
PROJECTION
39-47mm
DOOR THICKNESS
131mm
LEVER LENGTH
Why Choose the Karcher Rhodos Lever Door Handle Cosmos Black ER28 - OS 83?
This hardware combines precise German-inspired engineering with a contemporary finish suitable for demanding architectural applications.
Advanced Powder Coating
The Cosmos Black finish undergoes an environmentally friendly powder coating process that yields a deep, matte appearance. This layer acts as a barrier against daily wear, keeping the surface looking fresh and smooth to the touch even after years of operation, which makes it an ideal choice for both homes and commercial offices.
Secure 3-Piece Fixing
Installation becomes reliable because the handle uses a solid 3-piece rose system. This engineering design creates a rigid foundation that keeps the handle perfectly aligned on the door face, so you avoid the frustration of loose levers or handle play that often occurs in cheaper, single-piece entry-level hardware products.
Fire Door Compliance
Safety remains at the heart of this design because the handle is fire door rated, meeting the rigorous standards required for installation in protected escape routes and communal buildings. You can specify this product with confidence, knowing it fulfils necessary regulatory requirements for both residential developments and high-occupancy commercial properties throughout the UK.
Engineering Quality and Daily Performance
The internal mechanism is designed to handle consistent movement while maintaining a smooth, quiet operational feel for the user.
Internal Spring Mechanism
Internal sprung levers distribute force evenly during operation, which reduces the strain on your door latch and the handle itself. This feature is particularly valuable in heavy-use doors where constant pressure could otherwise cause the latch mechanism to wear down quickly, so the handle remains responsive and crisp to operate throughout its extended service life.
The spring tension is calibrated to provide a satisfying return action, meaning the lever snaps back to its horizontal position every time you release it. This mechanical precision prevents the handle from sagging over time, keeping your interior doors looking neat and professionally installed in any setting, from modern apartments to high-end boutique hotel suites.
Material Integrity and Longevity
Cosmos Black is not simply a colour choice but a functional finish that architects prefer for its ability to hide fingerprints and minor surface imperfections. Because the finish is heat-cured, it bonds effectively to the base metal, creating a surface that resists the types of impacts often found in busy corridors or high-traffic areas within commercial environments.
This hardware is manufactured to meet DIN EN1906 interior residential classification standards, which demonstrates that the product has undergone testing for load-bearing and operational cycles. This level of certification provides peace of mind that the investment will continue to perform, helping you avoid frequent replacements or costly repairs that often arise with lower-grade components.
Installation and Operational Workflow
Achieving a professional result is straightforward when you follow these logical steps for accurate door hardware alignment.
1
Site Preparation
Ensure your door is correctly prepared with the required mortice latch or lock before you attempt to fit the roses. Verify that your door thickness falls between the specified range of 39mm to 47mm, as this ensures that the provided spindle and fixing bolts will engage fully with the internal mechanism for a secure hold.
2
Mounting the Rose
Attach the internal mounting plates directly to the door face using the provided high-quality fixings. The 3-piece system allows for a rigid anchor point, which you should tighten with a manual screwdriver to avoid overtightening or damaging the threads, as a firm and level base is essential for the smooth function of the handle springs.
3
Final Assembly
Slide the lever handles onto the spindle, ensuring that the grub screws are tightened securely on the underside to prevent the handle from slipping. Once the rose covers are clicked or screwed into position, check that the lever operates silently and returns to a perfect horizontal position to finalise the installation process.
Expert Installation and Care Tip
Always use a manual screwdriver to secure the fixing bolts rather than a power drill, which prevents accidental stripping of the threads and protects the finish around the screw holes. For ongoing maintenance, wipe the surface with a soft, slightly damp cloth, avoiding all acidic cleaning agents or abrasive scrubbers to keep the Cosmos Black finish in perfect condition.
Technical Specifications
| Feature | Rating / Standard | Practical Details |
|---|---|---|
| Finish | Cosmos Black | A matte powder-coated finish designed for scratch and corrosion resistance. |
| Fixing System | 3-Piece Rose | Provides a secure, rigid mounting that resists loosening over time. |
| Certification | DIN EN1906 | Meets interior residential standards for operational cycle testing. |
| Compatibility | Fire Rated | Suitable for use on fire doors in domestic and commercial premises. |
Longevity and Trade Reliability
The Rhodos range is engineered for the long term, offering a reliable choice for trade professionals who need to specify hardware that does not return with faults. With a 2-year guarantee, this product provides an excellent balance of cost and build quality for both new build projects and renovation schemes.
Compatibility and Fitting Notes
This handle set is supplied with a standard square spindle and fixing pack, covering the vast majority of internal door requirements in the UK market.
While suitable for both internal and external doors, ensure that the door location is not subjected to extreme chemical environments or salt-heavy coastal air that could accelerate finish wear.
Please consult with a professional locksmith or carpenter if you are retrofitting these handles to doors with existing, non-standard backset lock mechanisms to ensure perfect clearance.
Specification
| Manufacturer | Karcher |
|---|---|
| Finish | Black |
| Dimensions | 52mm |
| Guarantee | 2 Year |
| Backplate Dimensions | 52mm |
| DDA Compliant | No |
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