Modern Internal Door Handle

Product Overview

Technical Specifications

• Model Number: DDSH043
• Brand: D&D HARDWARE
• Material: Premium SUS304 stainless steel (standard); SUS316 optional for high-moisture environments (bathrooms, garages)
• Spindle Sizes: 8×8mm, 7×7mm, 6×6mm (universally compatible with standard door locksets)
• Door Thickness Compatibility: 35-55mm (fits wooden, metal, and composite doors for households/commercial spaces)
• Lever Diameter Options: 16mm, 19mm, 20mm, 22mm (adaptable to adult/child grip comfort and design needs)
• Design Style: Modern, Contemporary (with Euro-inspired minimalism and industrial accents)
• Safety Features: Rounded lever edges (prevents accidental scratches), optional non-slip texture (for wet areas)
• Warranty: 5-year product warranty, backed by D&D’s 10-year mechanical warranty for core door hardware
• Origin: Manufactured in Jiangmen, Guangdong, China (SGS-audited facility with 18+ years of door hardware expertise)

Product Images and Videos

Product Features & Advantages

• SUS304 Durability: Resists rust, corrosion, and daily wear—ideal for high-use areas like entry doors and kitchens; outperforms ordinary steel handles by 300% in longevity tests (72-hour salt spray resistance).
• Lightweight Hollow Structure: Reduces weight by 30% vs. solid handles (easy to install for DIY users or contractors) while maintaining structural strength—lowers shipping costs for bulk orders (e.g., apartment complexes).
• Euro-Industrial Versatility: Modern/contemporary design blends with diverse interiors (from urban lofts to suburban villas); pairs with D&D’s cabinet handles for unified household decor.
• Safety-First Details: Rounded edges protect children and pets from scratches; optional non-slip texture enhances grip in bathrooms (paired with D&D’s bathroom door stops for full safety solutions).
• System Compatibility: Works flawlessly with D&D’s door locks, concealed hinges, and door closers—simplifying one-stop sourcing for B2B clients (e.g., hotel renovators, property managers).
• Global Compliance: CE (EN 1906) and UL (ANSI/BHMA A156.2) certified—ensures seamless import to EU, US, and Asian markets without extra compliance costs.

Step-by-Step Installation Guide

1. Gather tools: Phillips screwdriver, tape measure, pencil, level, and 2mm drill bit (for pre-drilling hardwood doors).
2. Mark installation height: Align the lever center 36 inches (91.4cm) from the floor (standard household height) and mark spindle/ screw holes—ensure alignment with existing door lock cutouts.
3. Pre-drill (if needed): For solid wood doors, drill small pilot holes to avoid splitting; skip for pre-drilled metal/composite doors.
4. Mount the base plate: Secure the handle base to the door with included screws, using a level to ensure horizontal alignment (critical for compatibility with door hinges).
5. Attach the hollow lever: Slide the lever onto the spindle and tighten the set screw (hidden under the lever) with a hex key—ensure no wobble.
6. Test functionality: Open/close the door 10+ times to verify smooth operation; adjust door hinges if the lever catches on the frame—pair with D&D’s door stoppers for added convenience.

Application Scenarios

• Residential Spaces: Entry doors (paired with D&D’s deadbolt locks for security), bedrooms (rounded edges for child safety), and kitchens (SUS304 resists oil/cleaners)—ideal for villas, apartments, and townhomes.
• Bathrooms & Garages: SUS316 option withstands moisture (bathrooms) and dust (garages); optional non-slip texture prevents slipping—matches D&D’s stainless steel door stops for safety.
• Light Commercial Areas: Boutique hotels, co-working spaces, and gym changing rooms—modern design enhances guest experience; durable SUS304 handles heavy foot traffic (paired with D&D’s panic exit devices for public areas).
• Educational & Healthcare: School classrooms and clinic exam rooms—rounded edges meet safety standards; easy-to-clean SUS304 surface complies with hygiene requirements.
• Retail & Hospitality: Café restrooms and small retail backrooms—lightweight design reduces installation time; Euro style aligns with modern commercial decor.

Value for Buyers

• Cost Efficiency: Hollow design cuts shipping costs by 20% for bulk orders; 10-year mechanical warranty minimizes replacement expenses (critical for property managers and hotel chains).
• Streamlined Sourcing: Procure handles, door locks, door hinges, and door accessories from one supplier—reduces logistics complexity and communication overhead.
• Design Flexibility: Multiple diameters and finishes adapt to project budgets (SUS201 for economy, SUS316 for premium) and design themes (industrial, modern).
• Global Market Access: Pre-certified (CE/UL) design eliminates import delays—ideal for distributors exporting to EU, US, and Southeast Asian markets.
• Stable Supply Chain: 200,000 units/month production capacity ensures on-time delivery for large projects (e.g., new housing developments, hotel renovations) even during peak seasons.

Certifications & Compliance

• Product Certifications: CE marked (EN 1906 for European safety standards), UL listed (ANSI/BHMA A156.2 for North American performance requirements)—meets global door hardware benchmarks.
• Quality Management: ISO9001-certified production process—every handle undergoes dimensional checks, corrosion testing (72-hour salt spray for SUS304), and functional testing (10,000+ operation cycles).
• Material Safety: SUS304/SUS316 stainless steel complies with REACH and RoHS regulations—free from harmful substances, suitable for eco-friendly building projects (e.g., LEED-certified homes).
• Accessibility Compliance: ADA-compliant grip design (easy to use for users with limited hand mobility) and EN 12115 compliant for EU accessibility standards.
• Factory Validation: SGS-audited manufacturing facility—verifies ethical production practices, quality control systems, and compliance with international labor standards.

Customization Options

• Material Grades: SUS201 (budget-friendly for mass residential projects), SUS304 (standard for most applications), SUS316 (high-corrosion resistance for wet/industrial areas).
• Surface Finishes: Brushed stainless steel (standard), matte black, polished chrome, or PVD gold—matches household/commercial decor trends (e.g., matte black for modern apartments).
• Design Modifications: OEM/ODM services for custom lever profiles (e.g., extended industrial edges), laser-engraved logos for brand clients, and custom spindle lengths for non-standard doors.
• Safety Add-Ons: Non-slip texture (for bathrooms/garages), child-safe lever locks, and color-matched door plates to create a unified door hardware system.
• Packaging Solutions: Retail-ready white boxes (with multilingual installation guides), custom color boxes for brand distributors, or bulk packaging for contractors.

Production Process & Quality Control

1. Raw Material Inspection: SUS304/SUS316 coils undergo chemical composition testing and tensile strength checks—rejecting any material below D&D’s door hardware quality standards.
2. Hollow Lever Forming: CNC machines shape the lever with precision (ensuring uniform wall thickness for strength) and cut spindle holes matching 8×8/7×7/6×6mm sizes.
3. Safety Edge Polishing: Automated polishing machines round lever edges to 0.5mm radius—eliminating sharp points and meeting safety regulations.
4. Surface Treatment: Multi-step coating (e.g., matte black PVD) or polishing; each handle undergoes adhesion testing to ensure finish durability (resists chipping/scratching).
5. Functional Testing: Each lever is mounted to a test door and cycled 10,000 times to simulate 5+ years of use—checking for loose parts or reduced performance.
6. Final QA & Certification: Visual inspection for defects, corrosion resistance verification, and compliance checks (CE/UL marking)—only 100% qualified units are packaged and shipped.