These hinges are made of metal.

Hinge leaves fit into two cutouts (mortises) to mount flush with the door and frame.

Also known as bullet hinges, these hinges are the right size for tight spaces and narrow frames.

These hinges are made of metal.

Springs provide lifting assistance to raise and hold lids open—slightly lift the lid to get it started and the support will do the rest. Manually shut the lids and the supports will hold them in the closed position.

Keep environments free of contaminants—with plastic bushings, there's no metal-to-metal contact that can release particles as these supports open and close. Manually control these free-moving lid supports through their full range of motion. Raise the lid until the hold-open mechanism on the support is engaged; slightly lift it again to release the hold and close the lid.

Also known as hatch springs, these supports are commonly used on hatches and other top-opening lids. Raise the lid to extend the spring, which props the lid open—an internal cable keeps the spring from overextending. Press the center of the spring to release the hold and close the lid.