Made of high-quality steel with premium nylon roller wheel and Gor15 roller bearing, the surface is black matte.
High strength industrial grade tracks and pulleys can easily hold 220lbs loads, anti-corrosion and anti-rust. Maintains its beauty and longevity for many years.
Warning:
To ensure that the door can be fully opened and closed, the hook should be installed along the edge of the door panel.
The door shaft should be perpendicular to the hole of the mounting hook.Attached with the most detailed product installation and operation instructions. and detailed graphical marking and measurement methods.
You can install it by yourself.