Behind the door to prevent the door and the wall collided with what is called
Door suction is also commonly known as door touch, but also a door opened after the suction positioning device to prevent the wind or touch the door and close. Door suction is divided into permanent magnetic door suction and electromagnetic door suction two, permanent magnetic door suction is generally used in ordinary doors, only manual control; electromagnetic door suction in the fire door and other electronic control windows and doors equipment, both manual control and automatic control function.
Ordinary permanent magnet door suction according to the installation of sub-wall-mounted, ground-mounted, according to the material sub-plastic type, metal type; electromagnetic door suction according to different installation products are divided into CT-01 wall, CT-02 ground, CT -03 chain of three categories, wall electromagnetic door according to the different structure is divided into standard type, increased type, lengthened, boxed, concealed type, long arm type; ground type electromagnetic door suction by CT-01 Wall-mounted electromagnetic door suction and right angle ground mounting bracket; chain electromagnetic door suction by CT-01 wall electromagnetic door and chain fastener components; due to CT-01 wall, CT-02 ground, CT-03 chain Electromagnetic door suction body common to each other, user-friendly installation conditions according to the use of the site to use.
Hello, you said that thing called door suction, to prevent the door and the wall collision, reduce noise and increase stability. Hope to help to you.