advantage?
The stainless steel bearing means that our bearing material, which is import from foreign country, is durable and anti-rust. The functions of this stainless steel bearing are to increase the smoothly and silently of the door while slipping on the aluminum.

How can I recognize that the bi-fold door is a product from Onitek?
It is very simple. There are some tips to make you easily recognize our bi-fold door:
- With Onitek’s logo on the top side of our door
- With Onitek’s logo on the door lock and roller.
- Our stainless steel bearing is red color.
- With magnet on the top of the door.

Why my bi-fold door roller have rusty problem? It makes the door always stuck and hard to close.
This is because that is not our product. Our bi-fold door roller is using stainless steel bearing, so it would not cause the problems above.

Is there any warranty if I buy Onitek’s bi-fold door?
Yes, we normally will give two years warranty and after sell services.

How to install bi-fold door to my house? Should I drill screw to my house’s wall?
Our bi-fold door is easily to install and does not need to drill screw because our bi-fold have two adjusted nuts. The function of this two adjusted nuts is to be fix to the door on the wall easily without damaging the house’s wall.