High quality hardware value: Designed for all kinds of copper doors glass doors KFC doors our H-1800 floor spring is the perfect choice for all kinds of residential doors Our floor springs are safe. In addition, our floor spring ensures the normal use of the door, parts are always changed. Easy installation: Each of our floor springs comes with detailed installation instructions, including every suitable part, saving you time and facilitating quick installation without delay in use. Our floor spring has a pivot, a manual adjustment screw, a door fan and frame, and a dust jacket. Do not need to go to the hardware store to run, simple operation, fast hand! Note: our floor spring is suitable for 0.9 meters wide to 1.1 meters wide, 2.3 meters high to 2.8 meters high within all kinds of copper doors, glass doors, KFC doors please contact us!.syi