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Flush bolt dust proof strike is a functional accessory used in conjunction with flush bolts in door hardware systems, specifically designed to fill gaps between door leaves and frames when closed. Its core structure consists of a sealed baffle and a fixed base, which reduces the penetration of dust, smoke, and airflow through physical barrier principles, while assisting the concealed pin to achieve stable locking of the door. After installation, the dust barrier forms a continuous contact surface with the door frame surface. When the door is closed, the hidden locking bolt tongue is embedded in the door frame groove, and the dust barrier synchronously adheres to prevent external pollutants from entering the room through the door gap; When opening the door, the lock tongue will retract to avoid wear on the door frame. As a detailed component of the door closing system, its design needs to take into account sealing, durability, and compatibility with concealed pins, which is a key component in improving the overall protective performance of the door body. For further information, please contact us.
Product Parameter | |
Product Name | Satin Stainless Steel Flush Bolt Dust Proof Strike for Internal Door |
Product Model | DDDP002 |
Material | Stainless Steel |
Finish | Satin Stainless Steel, Polished Stainless Steel, Physical Vapor Deposition, Antique Brass Plated, Antique Copper Plated, Matte Black |
Suitable for Door | Wood door and Steel door |
Packaging & Shipping | |
MOQ | 500 Pieces |
Package | 1pc /poly bag,white box / color inner box,Standard export Carton . |
Sample Time | 5-7 working days |
Production Lead Time | 30-35 days normally |
Shipping Port | Jiangmen , China / Shenzhen , China / Guangzhou , China |
D&D Product
The products that we offer are tested to the most stringent international industry standards, including BS EN, CE, UL, ANSI and BHMA, Suitable for Education, Healthcare, Hospitality, Residential and Commercial applications.
More door hardware items include:
1.Door Hinge- UL 10C R38013 & BHMA/ANSI Grade1/2 & CE EN1935 Grade 13
2.Concealed Hinge- BS EN1935, EN1634 Fire Rated
3.Door Lock - CE EN12209 UKCA Fire Rated & UL 10C R40901
4. Door Handle- BS EN 1906 Grade 4, EN1634 Fire Rated
5. Panic Exit Device- UL 10C R40486 & UL305 SA45817 & CE EN1125
6. Door Closer – CE BS EN 1154 & UL 10C R40717
7. Lock Cylinder-BS EN1303, EN1634 Fire Rated
8. Door Viewer - UL Listed UL 10C Fire Rated R41286
9. Glass Hardware / Bathroom Hardware / Barn Door Hardware
Product Features
1. Precise dimensions, compatible with multiple types of door bodies
This flush bolt dust proof strike has a size of 39mm × 19mm, optimized for the travel of standard concealed bolt lock tongues. It is deeply compatible with door frame grooves (5-12mm depth) and is compatible with two common door body materials: wooden and steel doors. Its compact structure does not occupy additional space, and its precise linkage with the hidden pin lock body enhances the stability of the door when closed.
2. Stainless steel substrate, wear-resistant and corrosion-resistant
The main body is made of stainless steel material, with high surface hardness and impact resistance, which can resist friction scratches caused by daily door opening and closing, and extend the service life of accessories. It has excellent corrosion resistance and can maintain a smooth surface even after long-term use in humid or salt spray environments, reducing functional degradation caused by rust. It is suitable for complex use scenarios such as coastal areas or industrial plants, providing long-lasting and reliable sealing support for doors.
3. SSS finish, low-key, practical and beautiful
The surface is treated with Satin Stainless Steel (matte stainless steel) technology, which has a soft luster and combines anti fingerprint and easy cleaning characteristics. Its matte finish can weaken metal reflections and seamlessly blend with modern industrial, minimalist, or Nordic decoration styles, enhancing the overall aesthetic of the door. At the same time, the surface texture is delicate and not easy to accumulate dust. Daily maintenance only requires wiping with a soft cloth to restore cleanliness, meeting the dual needs of users for functionality and appearance.
Product application
1. Fire isolation passages in commercial buildings
In commercial areas such as shopping centers and office buildings, flush bolt dust proof strikes are used in conjunction with concealed bolt locks to effectively fill gaps at the top or bottom of double doors, preventing smoke from fires from spreading through door gaps to adjacent areas. Its sealing design ensures critical time for personnel evacuation, while reducing damage to goods and equipment caused by fires and enhancing overall building safety.
2. High end residential privacy protection doors
In residential scenes such as villas and apartments, the flush bolt dust proof strike can be combined with concealed door locks in bedrooms and bathrooms to reduce door opening and closing noise through sealed design. Its matte stainless steel appearance harmonizes with modern home style, enhancing the texture of the door and meeting users' dual pursuit of privacy protection and quality of life.
Installation Guide
The installation of flush bolt dust proof strike needs to be carried out after the fixing of the concealed bolt lock body is completed. The steps are as follows:
1.Positioning installation hole: Align the dust collector base with the reserved groove position on the door frame, ensuring that it is aligned with the travel of the hidden pin lock tongue, and mark the fixed hole position of the base with a marker pen.
2.Drilling fixation: Use an electric drill to drill a 3mm diameter installation hole at the marked location (depth adjusted according to screw length), thread the matching stainless steel screw through the base hole, and tighten the door frame to secure it.
3.Debugging sealing: Close the door leaf and check if the contact surface between the dust collector and the door frame is tightly fitted. If there is a gap, adjust the base position or add or remove gaskets to ensure the sealing effect.
4.Tip: It is recommended to clean the surface of the door frame before installation to avoid dust affecting the fixing effect; If the door frame material is a hollow structure, it needs to be reinforced with expansion screws.