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Fire Rated Concealed Recessed Mount Automatic Drop Down Door Bottom Seal
- Product Information
Brushed Aluminium
Black Aluminium
White Aluminium
DDBS001 Fire‑Rated Drop‑Down Door Seal Silicon Rubber Automatic Door Bottom Seal
DDBS001 fire‑rated recess‑mount automatic drop‑down door bottom seal, equipped with high temperature resistant silicon rubber sealing insert. Extruded aluminium housing for concealed recess‑groove installation inside pre‑milled door‑leaf groove. Spring‑actuated mechanism: silicone seal retracts into housing on door opening to avoid floor abrasion; automatically drops down upon door‑closure to realize fire‑proof, smoke‑seal, heat‑resistant and sound‑proof concealed door‑bottom gap containment sealing. Optimized for fire‑rated wooden, metal and steel door‑leaf assemblies. Supplied in standard bar lengths for onsite cut‑to‑length. Custom housing finish and custom length are available for large‑volume fire‑safety construction tender orders. Monthly production capacity reaches 210,000 units for B2B wholesale architectural fire‑door hardware supply projects.
| Specification | Parameter |
|---|---|
| Product Type | Fire‑Rated Concealed Recessed‑Mount Automatic Drop‑Down Door‑Bottom Seal With Silicon Rubber Insert |
| Operation | Spring‑actuated drop‑down & retract, concealed recess‑groove door‑leaf installation |
| Material | Recessed‑Fit Aluminium Housing + High‑Temperature‑Resistant Silicon Rubber Sealing Insert |
| Core Functions | Fire‑proof, Smoke‑seal, Heat‑resistant, Sound‑proof concealed fire‑compartment door‑bottom gap sealing |
| Application | Fire‑Rated Wooden / Metal / Steel Door‑Leaf Assemblies, Institutional & Commercial Fire‑Safety Building Projects |
| Production Capacity | 210,000 Units / Month |
Application Scenarios
Institutional Fire‑Rated Concealed Door Installations
Silicon‑rubber fire‑rated concealed automatic drop‑down seal for institutional fire‑door leaf assemblies. Recessed‑groove hidden installation for neat visual appearance. High‑temp resistant silicone insert maintains stable fire‑smoke barrier performance for hospital, school and public‑building fire compartment door‑sets. Spring‑retract function protects floor surfaces during daily door operation.
Commercial Fire‑Safety Concealed Door Systems
Aluminium‑housing silicone fire‑proof bottom gasket for office and hotel concealed‑fit fire‑rated wooden, metal and steel doors. Requires pre‑milling recess groove on door leaf. Meets fire‑compartment smoke‑stop requirements for commercial new‑build fire‑safety projects.
Concealed Fire‑Door New‑Build & Architectural Tender Projects
Standard‑length bars support onsite cut‑to‑length, custom housing finish & custom length for bulk fire‑safety orders. Suitable for fire‑rated new‑build, refurbishment and concealed fire‑door hardware tender specification packages.
Product Characteristics
Concealed recess‑groove installation, aluminium housing fits into pre‑milled door‑leaf bottom groove, fully concealed after assembly for clean hidden aesthetic effect
Adopts high‑temperature‑resistant silicon rubber sealing insert, outstanding heat‑resisting property to satisfy fire‑rated door fire‑smoke containment requirements
Spring‑actuated mechanism: silicone seal retracts inward into housing when door opens to prevent floor scratching; drops automatically on door‑closure for fire‑proof, smoke‑seal and sound‑proof compartment sealing
Standard‑length bars can be onsite cut‑to‑length to match real door‑width dimension; multiple standard aluminium housing surface finish selections available
Specially engineered for fire‑rated wooden, metal and steel door‑leaf assemblies for institutional and commercial fire‑safety building applications
Custom length & custom housing finish available; monthly capacity 210 000 units for B2B fire‑safety hardware wholesale orders
Warranty & Customization
Standard quality warranty against manufacturing defects of aluminium housing, spring mechanism and silicon rubber fire‑resistant sealing insert
Bulk wholesale supply, custom unit length and custom housing finish for concealed‑fit fire‑safety architectural tender projects
2D installation milling drawing and fire‑performance specification datasheet available for tender submission documentation
Frequently Asked Questions
What is the difference of DDBS001 compared with ordinary fire‑rated drop‑down seals?
DDBS001 uses high‑temperature‑resistant silicon rubber sealing insert, concealed recess‑groove installation. Spring‑actuated mechanism delivers fire‑proof, smoke‑seal, heat‑resistant and sound‑proof sealing for fire‑rated door‑leaf assemblies.
What installation condition does DDBS001 require?
It is concealed recess‑mount type, pre‑milling dedicated recess groove on door‑leaf bottom is mandatory. Standard bars can be cut‑to‑length on construction‑site.
Which door‑leaf assemblies fit DDBS001 silicon‑rubber fire‑door seal?
Optimized for fire‑rated wooden, metal and steel door‑leaf assemblies of institutional and commercial fire‑safety projects; custom finish & length supported for bulk wholesale orders.
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