There are several different types of bifold door hinges available today. Each has slight advantages and benefits, but no hinge really stands out as better than the rest. The only real reason to buy a certain type of bifold door hinge is to make a match to the existing hinges during a repair. This guide will help you choose the bifold door hinge for your particular doors.
Shutter Bifold Door Hinge: Has two hinge plates each of the same size, one stacked on top of the other. The two hinges rotate around a common axis, the hinge pine. These hinges are for lighter duty doors and have less shear strength than other hinges.
Noise Bifold Door Hinges or cut-out hinges feature a single hinge plate with a cut-out in the plate that swings out and attaches to the other door. These hinges are also light duty and ideal for closets or laundry rooms with lower use. One side of the hinge is much smaller in width and height than the other.
Flat Bifold Door hinges feature two, same size hinge plates attached to one pin. This is a common, medium duty hinge with good strength for high-use closets. Each plate features holes for two to five screws and they come in various sizes. Downside is the hinges make lots of noise and need grease to perform silently.
Some flat, bifold door hinges feature a stop piece, a bent out section on the hinge plate that stops the hinges from bending too far in one direction. This is ideal for closet usage.