UL Listed Fire Rated Door Hinge for Residential - DDSS004-FR
Product Overview
As a flagship product in D&D HARDWARE’s residential door hardware lineup, the UL Listed Fire Rated Door Hinge (Model: DDSS004-FR) blends safety, durability, and aesthetics to meet the unique needs of residential and light-commercial spaces. Engineered with a stainless steel mortise-and-tenon design, this hinge delivers a seamless, flush fit with doors and frames—enhancing visual appeal while providing robust support for high-traffic areas like hotel entryways or apartment bedrooms.
Certified by Underwriters Laboratories (UL) with a 3-hour fire rating, it exceeds global fire safety standards, offering critical protection for homes and businesses. As a professional door hinges manufacturer with over 18 years of expertise, D&D ensures this hinge integrates seamlessly with our door handles, door locksets, and door closers, forming a complete, code-compliant door system. Its corrosion-resistant stainless steel construction withstands daily wear (even in humid spaces like bathrooms) and maintains performance for years—making it a reliable choice for both residential and hospitality projects.
Product Images and Videos
Technical Specifications
- Model Number: DDSS004-FR
- Brand: D&D HARDWARE
- Type: Stainless steel mortise-and-tenon door hinge
- Fire Rating: UL Listed 3 Hours Fire-Rated
- Material: Premium stainless steel (SUS304 as standard; SUS316 available for enhanced corrosion resistance)
- Dimensions: 4.5"x4.0"x3.0mm, 4.5"x4.5"x3.0mm, 4.5"x4.0"x3.4mm, 4.5"x4.5"x3.4mm, 4.5"x4.0"x4.6mm, 4.5"x4.5"x4.6mm (length x width x thickness)
- Design Styles: Compatible with Industrial, Contemporary, Traditional, Modern, and Transitional aesthetics
- Warranty: 5 Years Mechanical Warranty
- Place of Origin: Jiangmen, Guangdong, China
- Supply Capacity: 200,000 pieces per month
- After-sales Service: Online Technical Support
- Engineering Solutions: Graphic Design, 3D Model Design
Product Features & Advantages
- UL 3-Hour Fire Safety Protection: Undergoes rigorous UL testing to maintain structural integrity for 3 hours, preventing fire spread and meeting residential/commercial fire codes—critical for bedrooms, entryways, and hotel rooms.
- Mortise-and-Tenon Design: Creates a flush, seamless fit with doors and frames, eliminating gaps that trap dirt or compromise aesthetics. This design also enhances door stability, pairing perfectly with modern door knobs and door handles.
- Corrosion-Resistant Stainless Steel: Made with SUS304/SUS316 stainless steel to resist rust, tarnish, and moisture damage—ideal for bathrooms, kitchens, and outdoor covered entryways. It retains its finish even with frequent cleaning.
- Versatile Size Options: Six standard size variants accommodate different door thicknesses (from 1.3" to 2.1") and weights, reducing the need for custom modifications and simplifying inventory management for buyers.
- Low-Maintenance Performance: Precision machining ensures smooth door operation without frequent lubrication. The 5-year warranty covers mechanical defects, lowering long-term maintenance costs for homeowners and property managers.
- System Compatibility: Works in harmony with D&D’s door closers, door seals, and panic exit devices (for commercial spaces), allowing buyers to source a complete, compatible door hardware system from one supplier.
How to Install the UL Listed Fire Rated Residential Hinge (Step-by-Step)
- Prepare Tools & Materials: Gather a mortise chisel, hammer, drill, screwdriver, measuring tape, pencil, and the DDSS004-FR hinge (include matching screws). For fire door compliance, pair with D&D’s door seals.
- Mark Hinge Positions: On the door edge and frame, measure and mark 3 hinge locations (7" from the top, 11" from the bottom, and centered) to ensure even weight distribution. Mark the mortise depth (matching the hinge leaf thickness).
- Cut Mortises: Use the mortise chisel to carve recesses (mortises) into the door and frame. Ensure the mortise is deep enough for the hinge leaf to sit flush—no凸起 (bulges) that could affect door closure.
- Secure Hinge Leaves: Place one hinge leaf into the frame mortise, drill pilot holes (to avoid wood splitting), and fasten with screws. Repeat to attach the second leaf to the door mortise. Check alignment to ensure leaves line up perfectly.
- Install Hinge Pin & Test: Align the door’s hinge leaf with the frame’s leaf, insert the hinge pin, and test the door swing. It should open/close smoothly without sticking. For fire compliance, verify the door seals tightly when closed (pair with D&D’s door seal if gaps exist).
Application Scenarios
This UL listed fire rated hinge is designed for residential and light-commercial spaces where safety, aesthetics, and durability matter. Key application scenarios include:
- Residential Spaces: Villas, apartments, and homes—ideal for bedrooms, bathrooms, kitchens, and entry doors (complements door knobs and smart locks for modern living).
- Hospitality Industry: Hotels and resorts—withstands high traffic, resists corrosion from cleaning chemicals, and enhances room aesthetics (pairs with D&D’s door handles for a cohesive look).
- Light-Commercial Buildings: Small offices, home offices, and retail stores—meets fire codes while maintaining a welcoming appearance.
- Public Spaces: Schools, hospitals, and community halls—resists heavy use and meets health/safety standards for public facilities.
Value for Buyers: Choosing this hinge eliminates fire code violations, reduces procurement time (one-stop door hardware sourcing), and enhances end-product value (safety + aesthetics). For distributors, the versatile size options and system compatibility simplify inventory, while the 5-year warranty builds trust with end-users.
Certifications and Compliance
- UL Listing: Officially UL Listed with a 3-hour fire rating, meeting ANSI/BHMA A156.2 standards for door hinges—recognized in North America, Europe, and Asia.
- ISO 9001 Compliance: Manufactured under D&D’s ISO 9001-certified quality management system, ensuring consistent quality across every unit.
- Global Fire Codes: Adheres to NFPA 80 (U.S.), EN 1634 (EU), and SASO (Middle East) fire safety regulations—suitable for export to 60+ countries D&D serves.
- SGS Factory Audited: Produced in an SGS-audited facility, verifying ethical manufacturing practices and reliable production capabilities.
Customization Options
To meet diverse project needs, D&D offers flexible customization for the DDSS004-FR hinge:
- Material Upgrades: Upgrade from SUS304 to SUS316 stainless steel for coastal areas or high-moisture spaces (e.g., beachfront villas) to enhance corrosion resistance.
- Finish Customization: Choose finishes like polished brass, oil-rubbed bronze, or black matte to match door handles, cabinet handles, or door locksets—ideal for interior design cohesion.
- Size Modifications: Adjust dimensions (length, width, thickness) for non-standard door sizes (e.g., 3" thick solid wood doors) based on your project requirements.
- Packaging Customization: Opt for branded white boxes, color boxes, or blister packs with your logo—suitable for retail distribution or private-label projects.
- OEM/ODM Services: Collaborate with our engineering team for custom hinge designs (e.g., hidden screws for a sleek look) or private-label branding—supported by 3D model design and graphic design services.
Production Process & Quality Control
D&D’s production process ensures every UL listed fire rated residential hinge meets the highest safety and quality standards. Key steps include:
- Material Sourcing: Select SUS304/SUS316 stainless steel and test for purity (via光谱分析/spectroscopic analysis) to ensure fire resistance and corrosion performance.
- Precision Machining: Use CNC machines to cut hinge components (leaves, tenons, knuckles) to exact specifications—ensuring mortise-and-tenon joints fit tightly.
- Mortise Groove Formation: Specialized tools create precise mortise grooves in hinge leaves, enabling flush installation into doors and frames.
- Heat Treatment: Harden hinge components at 1050°C to enhance strength and fire resistance—critical for meeting UL’s 3-hour rating.
- Surface Finishing: Apply the selected finish (e.g., satin nickel) via electroplating or powder coating, then test for adhesion and corrosion resistance.
- Performance Testing: Sample hinges undergo UL fire testing (3 hours at 1700°F) and load-bearing tests (up to 180lbs) to verify compliance. Each unit is inspected for dimensional accuracy and smooth operation.
- Final QC Inspection: A dedicated QC team checks every hinge for finish defects, mechanical functionality, and certification compliance—only passing units are packaged for shipment.
Packaging & Logistics
- Packaging Options: Available in white boxes, color boxes, or carton packing (20 pieces per carton). Custom packaging (with your logo or branding) is available for bulk orders.
- Selling Units: Sold per piece; bulk orders (500+ pieces) qualify for volume pricing and flexible payment terms.
- Transportation Modes: Ocean, land, air, or express shipping—choose based on your timeline (e.g., express for urgent orders, ocean for cost-efficient bulk shipments).
- Port Options: Ships from Jiangmen, Guangzhou, or Shenzhen ports—closest to our factory for fast loading and reduced logistics costs.
- Incoterms: FOB, Express Delivery, CFR, CIF, EXW, FCA, DDP, DDU—select terms that align with your import policies (e.g., DDP for door-to-door delivery).
- Payment Terms: L/C (Letter of Credit) or T/T (Telegraphic Transfer)—secure options for international transactions, with 30% advance and 70% balance before shipment.
After-Sales Support
- Warranty Service: 5-year mechanical warranty—covers defects in materials and workmanship. We replace or repair faulty units free of charge (shipping included for bulk orders).
- Online Technical Support: Our team provides 24/7 online support (via email or chat) for installation guidance, troubleshooting, and compatibility questions (e.g., pairing with smart locks).
- Engineering Solutions: Access to graphic design (installation diagrams) and 3D model design services to support project proposals or client presentations.
- Certification Documentation: We provide digital copies of UL certificates, ISO 9001 documents, and test reports for customs clearance and project compliance audits.
