Atomatic Door Bottom Adb-003

Product Summary: Mortised Type Suitable for Concealed Installation

This kind of automatic door bottoms is Mortised Type. First, the door bottom processing a groove (slotted size) , and then the automatic door bottom sealing strip embedded in the groove, with the package attached to the fixed tab fixed.

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

Product Description:

Automatic door bottom ADB-003 is installed at the bottom of the door, when the door is closed, a sealing strip is automatically extended downward to press down on the ground to seal the gap between the bottom of the door and the ground.

Housing Material: Made of 6063 aluminum alloy; fasteners are made of stainless steel sheets and screws.
Seal Strip: Equipped with standard silicone rubber sealing strip.
Round Actuator Head: Comes standard with a round metal plunger.
Custom Lengths: Available in customizable lengths from 250mm to 1500mm.
Standard Lengths: 800mm, 915mm, and 1000mm.
For standard lengths, the minimum cuttable size is: • 800mm can be cut down to 650mm
• 915mm and 1000mm can be cut down to 800mm

Product Display

Why Choose Mortised Type Automatic Door Bottom

Installed inside a mortised groove at the bottom of the door, this type remains invisible from outside — providing a sleek and elegant appearance.

When the door closes, the seal drops automatically to fill the gap. Upon opening, the seal retracts — ensuring smooth operation without floor friction.

Effectively blocks air, dust, sound, smoke, and insects, improving insulation and comfort for interior spaces.

Perfect for hotels, hospitals, offices, conference rooms, and other places requiring both functionality and aesthetics.

Works with wooden, steel, composite, and acoustic doors — highly versatile across industries.

How to Install Mortised Type Automatic door bottom

OEM & Customization Options

Tailored Solutions for Every Project

At DAOSEAL, we offer flexible OEM and customization options to match your specific needs.

Custom logo sample image on product or packaging
Packaging types (color box, film wrap, etc.)
Color and size swatch grid

Let’s Customize Yours

Factory & Quality Control

Precision Manufacturing, Assured Quality

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.

State-of-the-art production lines
In-house inspection & testing equipment
Strict compliance with ISO standards
Final QC checks before packaging

Life cycles Tester

Salt-Spray Tester

Automatic door bottom Test

Customer Reviews & Feedback

Trusted by Global Clients

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.

As a door manufacturer in the UAE, we need reliable sealing strips that perform well under heat and dust. Daoseal’s automatic door bottoms are exactly what we needed. The best choice for high quality automatic door bottoms

Ahmed

Operations Director, Gulf Door Systems

We’ve sourced automatic door borrom from Daoseal for several large-scale housing projects in Canada. Their quality control is excellent, and the custom sizes fit perfectly. Top-notch atutomatic door bottom solutions

Sarah Thompson

Buyer, Pemoka

Daoseal’s Automatic door bottom are top-notch. Reliable and efficient automatic door bottom products, Excellent quality, fast shipping, and always consistent. Very good supplier. we Highly recommended!