The first is from Hercule company with a power of 380 Newtons, designed for doors with a width of 3.5 meters. The second is from Hercule company with a power of 550 Newtons, designed for doors with a width of 4.5 meters. We also offer preventive maintenance services for doors to prevent malfunctions, including cleaning and lubricating the internal springs and side tracks, and precise adjustment of balances. Replacing the side fabric of the doors. Replacing broken plastic drums. High efficiency, strength, and quality, with a one-year warranty. For orders, contact ( Phone number appears when clicking the contact button )