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4 Inch Stainless Steel Falling Hinge For Internal Door Fire Rated Butt Hinge
- Product Information
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SS017 4 Inch Stainless Steel Falling Hinge For Internal Door Fire Rated Butt Hinge
SS017 4 inch stainless steel falling hinge manufactured by WINGTEC. Falling hinge with self-closing gravity design for internal door application. Gravity driven automatic door closing function, no hydraulic parts required. 201 / 304 / 316 stainless steel grades optional for different anti-corrosion requirements. Multiple hole template layout and pin tip selections, full mortise butt installation. Internal wear-resistant structure ensures stable and reliable automatic closing performance. Multiple decorative surface finishes available. UL‑Listed UL10C 3‑Hour fire‑rated(UL File No.R42033), complies with EN1935 CE standards and conforms to NFPA80 fire door requirements. Suitable for interior fire doors, widely applied in education, healthcare, hospitality, government and office building architectural hardware tender projects. Monthly production capacity reaches 200000 units for B2B bulk wholesale orders.
Product Specification
Technical Parameter
| Specification | Parameter |
|---|---|
| Product Type | UL‑Listed 4 Inch Stainless Steel Gravity Falling Full Mortise Butt Hinge For Internal Door, UL File No.R42033 |
| Operation | Gravity falling hinge with self-closing function, no hydraulic parts, internal wear-resistant construction, multiple hole template layout and pin tip options, full mortise installation. UL‑Listed UL10C(UL File No.R42033) & EN1935 CE fire-safety certified, meets NFPA80 fire door standards. |
| Material | Optional 201/304/316 stainless steel hinge leaf, gravity falling hinge structure, wear-resistant internal components, multiple decorative surface treatments |
| Core Functions | Gravity self-closing falling hinge for interior door, automatically closes door by gravity without spring or hydraulic cylinder. Multi finish, pin tip and hole template options, 3-hour fire rated, ideal for internal fire door assemblies |
| Application | Interior fire rated door assemblies, education, healthcare, hospitality, government and office building hardware tender projects |
| Production Capacity | 200000 Units / Month |
| MOQ | 500 Pairs |
| Sample Time | 5‑7 Working Days |
| Lead Time | 30‑35 Days |
| Packing | 1 Pair / White Box / Color Box / Blister Card, Standard Export Carton |
Application Scenarios
Internal Fire Door Systems
SS017 4 inch falling hinge adopts gravity self-closing principle for interior fire door applications. It closes door automatically by gravity without hydraulic or spring parts, less prone to failure. 201/304/316 stainless steel options provide different anti-corrosion capability for indoor environments. Internal wear-resistant structure delivers long-lasting stable automatic closing performance. Various hole templates and pin tip variants adapt to interior fire door frame cutout requirements. UL‑Listed UL10C(UL File No.R42033) and EN1935 certifications comply with international fire building codes for falling butt hinge assemblies.
Institutional New Construction & Retrofit
This 4 inch stainless steel falling hinge fits interior fire rated door sets. Widely specified for school, hospital, hotel, government and office building new build and renovation hardware tender projects. Rich surface finish selections match different interior architectural decoration styles.
Architectural Hardware Tender Projects
Complete matching mounting screws supplied. Full mortise butt mounting with gravity falling hinge design. Multiple dimension, hole template, pin tip and finish selections available. UL compliance datasheet, EN test report, installation drawings and compliance documents can be prepared for tender submission, UL certification under file R42033.
Product Characteristics
Gravity falling butt hinge profile, optional 201/304/316 stainless steel leaf, gravity self-closing design without hydraulic parts, internal wear-resistant assembly; stable automatic closing, designed for internal doors
Multiple hole template layout and pin tip selections to fit various interior door cutout specifications
Classic full mortise falling hinge installation; gravity self-close mechanism, many decorative finish options for building matching
UL‑Listed UL10C 3‑Hour fire‑rated(UL File No.R42033), complies with EN1935 CE, conforms to NFPA80 fire door standards for falling butt hinge hardware
Full mortise butt mounting; optimized for interior fire rated door assemblies
Complete matching mounting screw accessories supplied; monthly capacity 200000 units for bulk B2B tender wholesale orders
Warranty & Customization
Standard quality warranty covers manufacturing defects of stainless steel hinge leaf and internal wear-resistant components for internal fire door application
Bulk wholesale supply for construction and institutional fire door tender projects; custom finish, pin tip and hole template variants are available
2D installation drawing, performance datasheet and UL compliance statement documentation available for tender submission, UL File R42033
Frequently Asked Questions
What certifications does SS017 falling hinge have?
SS017 is UL‑Listed UL10C 3‑Hour fire‑rated(UL File No.R42033), EN1935 CE compliant and meets NFPA80 fire door requirements for 4 inch stainless steel falling hinge for internal door.
How does gravity falling hinge work?
SS017 falling hinge uses gravity slope structure. When the door is opened, gravity pulls the leaf back to automatically shut the door, no hydraulic cylinder needed.
Can SS017 be used for fire rated interior door?
Yes. SS017 is UL 3-hour fire rated, engineered for internal fire door assemblies. Installation must comply with local fire building codes to retain fire rating integrity.
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