This model is surfaced-mounted type, no need to slotting at the bottom of the door, just a few screws can be installed, suitable for late-stage upgrade.
| Material | Aluminum alloy frame + silicone sealing strip + 304 stainless steel accessories |
|---|---|
| Seal Material | Silicon rubber or EDDM seal |
| Location | Door bottom or sliding door edge |
| Finishes | Aluminum, Dark Bronze Anodized, custom powder coated finishes upon request |
| Standard Lengths | 800mm, 915mm, 1000mm. Can be cut according to customer request |
| Mounting Type | Surface Mounted Type |
| Min/Max Gap Size | 3mm / 15mm |
Surface-mounted design eliminates the need for door slotting or modifications.
Install in minutes using a few screws — ideal for upgrades and retrofits
Anodized aluminum shell ensures corrosion resistance and durability.
Flexible silicone or EDDM strip provides a tight seal against sound, dust, and air.
Standard sizes available; can be trimmed to fit your door perfectly.
At DAOSEAL, we offer flexible OEM and customization options to match your specific needs.
DAOSEAL maintains strict quality control across every step of the manufacturing process. From material selection to final inspection, we ensure every automatic door bottom meets our highest standards.
Discover what our customers say about DAOSEAL’s s Automatic door bottom. From product performance to support experience, we’re proud to be their sealing solution partner.
We are manufacturer base in China, Real factory no middleman
A: An automatic door bottom is a sealing device installed on the bottom edge of a door. When the door closes, an internal mechanism lowers the seal to block air, sound, dust, smoke, and light from passing through the gap under the door.
A: Our models are compatible with wood, metal, glass, and acoustic doors. They can be surface-mounted or mortised depending on the door structure and installation needs.
A: Yes. We support full customization including lengths (up to 1000mm+), activation mechanisms (single plunger, double plunger), and sealing types (neoprene, silicone, brush insert).
A:Yes, we offer models designed for fire-rated doors and acoustic sealing applications. Let us know your project requirements and we’ll recommend the most suitable model.
A: Yes, each product comes with the required mounting accessories and installation guide for fast and easy setup.
A: Our standard MOQ is 200 pcs per model. For custom specifications or OEM requests, please contact us for a detailed quote.
Contact Daoseal for expert advice, fast quotation, and free sample of door & window sealing strips. Response within 12 hours, guaranteed!
We will contact you within 1 working day, please pay attention to the email with the suffix “@Daoseal.com”.
