- Architectural Hardware
- Door Hardware
- Hinges
- ANSI Fire Rated Door Hinges
- BS EN 1935 Grade 13 CE Hinges
- Stainless Steel Hinges
- Steel Hinges
- Brass Hinges
- Conceal Hinges
- Commercial Hinges
- Folding Door Hinges
- Antirust Door Hinges
- Continuous Piano Hinges
- Security Hinges
- Flush Hinges
- Spring Hinges
- Lift Off Hinges
- Flag Hinges
- Electrified Door Hinges
- Heavy Duty Hinges
- Hinge Screws
- Glass Hardware
Product Categories
Adjustable Fire Rated Automatic Drop Down Door Bottom Seal
- Product Information
Brushed Aluminium
Black Aluminium
White Aluminium
DDBS003 Adjustable Fire‑Door Drop‑Down Seals Aluminium Automatic Bottom Door Seal
DDBS003 adjustable fire‑rated automatic drop‑down door bottom seal. Extruded aluminium housing fitted with adjustable spring‑actuated fire‑resistant sealing insert. Adjustable drop stroke to accommodate varying door‑bottom gap dimensions. Mechanism retracts seal off floor surface on door opening to prevent abrasion; automatically drops down upon door‑closure to achieve fire‑proof, smoke‑seal, sound‑proof and airtight compartment sealing. Designed for fire‑rated wooden, metal and steel door assemblies. Standard lengths support onsite cut‑to‑length. Custom housing finish and custom length available for large‑volume fire‑safety construction tender orders. Monthly production capacity reaches 190,000 units for B2B wholesale architectural fire‑door hardware supply projects.
| Specification | Parameter |
|---|---|
| Product Type | Adjustable Fire‑Rated Automatic Drop‑Down Door‑Bottom Seal |
| Operation | Adjustable spring‑actuated drop‑down & retract, surface‑mount installation |
| Material | Extruded Aluminium Housing + Fire‑Resistant Adjustable Sealing Insert |
| Core Functions | Fire‑proof, Smoke‑seal, Sound‑proof, Airtight fire‑compartment door‑bottom gap sealing |
| Application | Fire‑Rated Wooden / Metal / Steel Door Assemblies, Institutional & Commercial Fire‑Safety Building Projects |
| Production Capacity | 190,000 Units / Month |
Application Scenarios
Institutional Fire‑Rated Door Installations
Adjustable fire‑rated automatic drop‑down seal for institutional fire‑door assemblies. Adjustable drop‑stroke adapts to variable door‑bottom gaps on‑site. Spring‑retract design reduces floor wear; delivers fire containment, smoke‑stop, acoustic and airtight sealing for hospital, school and public‑building fire‑compartment door‑sets.
Commercial Fire‑Safety Building Systems
Aluminium‑housing fire‑proof bottom gasket for office, hotel and commercial fire‑rated wooden, metal and steel doors. Surface‑mount unit suits new‑build and retro‑fit fire‑safety upgrade works, meets compartment smoke‑fire barrier specification requirements.
Fire‑Door New‑Build & Architectural Tender Projects
Standard factory‑length bars for onsite cut‑to‑length, custom housing finish & custom length for bulk fire‑safety orders. Suitable for fire‑rated new‑build, refurbishment and fire‑door hardware tender specification packages.
Product Characteristics
Extruded aluminium housing surface‑mount construction; adjustable drop‑stroke mechanism to adapt to different on‑site door‑bottom gap sizes without part replacement
Spring‑actuated fire‑resistant sealing insert: seal retracts upward off floor during door opening to reduce abrasion; drops automatically on door‑closure for fire‑smoke compartment barrier
Multi‑functional fire‑safety sealing: fire‑proof, smoke‑seal, sound‑proof and airtight performance for fire‑rated door‑bottom compartment gaps
Standard‑length bars can be cut‑to‑length onsite to fit real door‑width dimension; multiple standard aluminium surface finish selections available
Engineered for fire‑rated wooden, metal and steel door‑sets, for institutional and commercial fire‑safety building applications
Custom length & custom housing finish available; monthly capacity 190 000 units for B2B fire‑safety hardware wholesale orders
Warranty & Customization
Standard quality warranty against manufacturing defects of housing, adjustable spring mechanism and fire‑resistant sealing insert
Bulk wholesale supply, custom unit length and custom housing finish for fire‑safety architectural tender projects
2D installation drawing and fire‑performance specification datasheet available for tender submission documentation
Frequently Asked Questions
What is the key feature of DDBS003 fire‑door drop‑down seal?
DDBS003 is fire‑rated automatic drop‑down seal with adjustable drop stroke, adapting to variable door‑bottom gaps. Spring‑retract fire‑resistant insert provides fire‑proof, smoke‑seal, sound‑proof and airtight compartment sealing.
What installation advantages does adjustable‑stroke bring?
Adjustable drop stroke allows field adjustment for different door‑bottom gap sizes on‑site, no need to change different seal models during fire‑door installation and retro‑fit works.
Which door‑sets are suitable for DDBS003?
Optimized for fire‑rated wooden, metal and steel door assemblies for institutional and commercial fire‑safety projects; custom finish & length supported for bulk wholesale orders.
Email to this supplier