1.Close door sliently, light stretch, brand guarantee, quality assurance
2. Two hydraulic pressure valver control two sections of door closing seperately. the speed of locking have been control by the whole section of hydraulic pressure.
3.The high-carbon steel axis and rack work smart and less transfigure after being managed through high channel adjusting
|Product name||Heavy Duty Door Closer|
|Application||fire doors, smoke doors|
|Speed adjustment||two stages adjustable speed|
|Hold open/non-hold open||90°hold-open and Automatic|
Wooden door,security doors.aluminum door,steel doors,iron doors,fire doors,hollow metal doors and various stayles of door frames can be installed around.