Can the length and sealing material be customized?

Yes. Length, housing color, sealing material, trigger configuration, and other details can be customized according to project requirements or customer drawings.

What information is required for a quotation?

Please provide the required length, quantity, door material, installation method, sealing requirements, test requirements, and destination country or port.

What is the minimum order quantity?

The standard minimum order quantity is 300 pieces. The MOQ may vary depending on the model, length, color, and customization requirements.

What is the usual lead time?

Standard production normally takes approximately 10-20 days after the order details and payment are confirmed. Customized products may require additional time.

Surface Door Bottom Sweep Seal for Dust and Draft Protection

Name: Surface Door Bottom Sweep Seal for Dust and Draft Protection
Brand: Foshan Nanhai Chongtai Fire-Proof Material Co., Ltd.
SKU: 1993392981

Guangdong, ChinaFoshan Nanhai Chongtai Fire-Proof Material Co., Ltd.

US$5.22

300 Meters

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Aluminum Alloy and Rubber

Usage

Doors & Windows

Model NO.

FQ-E-021

Type

Surface-Mounted Automatic Drop Down Seal

Sectional Shape

Rectangular / Customizable

Performance

Acoustic, Smoke and Draft Sealing

Vulcanization

Continuous Vulcanization

Standard

Standard, Nonstandard

Product Name

Surface-Mounted Automatic Drop Down Door Seal

Installation Type

Surface Mounted

Housing Material

Aluminum Alloy

Sealing Material

Rubber

Main Usage

Sound / Smoke / Draft / Light / Dust Sealing

Operation

Automatic Drop Mechanism

Suitable Door

Wooden / Metal / Fire-Rated Doors

Trigger Material

Copper or Rubber

Length

Customizable

MOQ

300 PCS

Lead Time

15-20 Days

Sample Time

7-10 Days

Color

Silver / Black / Customizable

Transport Package

Carton

Trademark

FAN QIU

Origin

China

HS Code

8302419000

Key features

Surface-mounted installation eliminates the need to cut a groove in the door bottom, making installation and replacement easier.

The sealing strip drops automatically when the door closes and retracts when the door opens, reducing friction against the floor.

Helps seal the gap beneath the door to reduce smoke, drafts, dust, light, insects, and sound transmission.

Aluminum alloy housing provides a lightweight, durable, and corrosion-resistant structure for long-term use.

Suitable for wooden, metal, acoustic, and fire-rated door applications in commercial and residential buildings.

Available in customized lengths, colors, sealing materials, and operating configurations for different project requirements.

Factory-direct manufacturing supports OEM, ODM, project orders, and production according to customer drawings or samples.

Selected models are available with EN 1634-1 and UL 10C fire-test performance; please confirm the applicable model before ordering.

Company profile

Flexible CustomizationStandardized quality controlStandardized Supplier ManagementCustomization from Samples

Foshan Nanhai Chongtai Fire-Proof Material Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 16 Years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤3.20h

AI-Powered supplier vetting

SummaryThe supplier operates in rail transit, high-speed rail equipment and accessories, new energy technologies, technical glass, fireproof sealing materials, and related special equipment. It reports extensive customization capability, OEM service for recognized brands, standardized finished-product inspection, and multiple quality, environmental, occupational-health, fire-protection, and EU certifications. Its company description states that it has served nearly a thousand major enterprises and achieved an average annual order delivery rate above 98%. However, the provided information indicates no valid manufacturing-capacity contract with an affiliated subcontractor, no inventory, overseas warehouse, overseas showroom, overseas agent or branch, or offline trade-show participation. Financial credibility cannot be assessed because the supplied financial fields contain zero values and no reliable supporting explanation.

Supplier typeThe supplier is positioned as a seller and developer of rail transit and high-speed rail equipment, rail transit green composite materials, new energy prime movers and technologies, technical glass, fireproof sealing materials, and special equipment. The scope indicates an industrial equipment and component supplier with research and development activities, rather than a general trading-only business.

CertificationsThe supplier reports ISO9001:2015, ISO14001, ISO45001, EU CE certification, 17 fire-protection product certificates issued by the Ministry of Emergency Management Fire Assessment Center, and more than 20 EU fire-resistant material certificates. This is explicit evidence of broad quality, environmental, occupational-health, fire-product, and EU compliance certification.

R&D capabilityThe supplier describes its products as innovative and offers research and development activities in emerging energy technologies and nuclear-power equipment assembly and engineering technology. It also supports customization and OEM services, but reports no available SDK; the evidence supports product and engineering innovation activity without establishing a complete software-development capability.

Customization capabilityThe supplier explicitly offers flexible customization, minor customization, full customization, customization from customer designs, and customization from samples. Its description also states that products can be customized according to actual needs, providing direct evidence of broad customization capability.

Client casesThe supplier states that it has long served nearly a thousand major enterprises and reports OEM service for recognized brands. It also cites extensive fire-protection and EU fire-resistant material certifications, but no specific customer names, project descriptions, or independently verifiable case details are provided.

Product Q&A

Q:What is a surface-mounted automatic drop down seal?

It is a door-bottom sealing device installed on the surface of the door. When the door closes, the internal mechanism automatically lowers the sealing strip to close the floor gap.

Q:What is the difference between a surface-mounted and a concealed drop seal?

A surface-mounted seal is fixed directly to the door face and normally does not require a groove in the door bottom. A concealed model is recessed into the bottom of the door for a more hidden installation.

Q:What functions does the seal provide?

It helps reduce smoke, drafts, dust, light, insects, and sound transmission through the gap beneath the door. Performance depends on the selected model, door construction, floor condition, and installation quality.

Q:What types of doors can it be used with?

It can be used with wooden, metal, acoustic, and fire-rated doors. Please provide the door type, dimensions, and application requirements so we can recommend a suitable model.

Q:Does the sealing strip drag across the floor?

No. When correctly installed, the sealing strip drops as the door closes and retracts as the door opens, helping reduce friction and wear on the floor and sealing material.