What is an automatic door bottom
![automatic door bottom seal](https://daoseal.com/wp-content/uploads/2021/04/automatic-door-bottom-seal.jpg)
What is an automatic door bottom Automatic door bottom consists of Aluminum alloy frame + Copper Button + spring mechanism + silicone sealing strip 1)Aluminum alloy profile, it is always be made of high-quality aluminum material, according to different door system and dimension, the profile has a different design and style 2) Copper Button: when the door open […]