Based on the sizes of opening space,there are a variety of configurations of bi-folding door hardware system solutions.Including one casement door sash + three folding door sashes,five folding door sashes + 0 casement door sash,etc..

It’s operated conveniently,easy to open and close that make your life more comfortable.3H’s bi-folding door hardware system solutions are equiped with multi-locking door lock set,heavy-load-bearing roller and hinge,so that its air tightness,dust-resistance and sound-proof performance are good.