Jamb Type One Piece Hardware
Jamb type one piece garage door hardware is essentially a pair of hinges (a.k.a. four bar linkages), which mount to the door and to the door jambs. The motion of the door is controlled by the geometry of the hinges, and the weight of the door is counterbalanced by extension springs, which are attached to each hinge.
BENEFITS OF JAMB TYPE HARDWARE
Fewer components to install compared to sectional doors or jamb type with track, resulting in less installation time.
Less interference with beams and floor joists since the door remains halfway inside / outside the garage while open.
LESS HEADROOM REQUIRED
As little as 1-1/2" headroom required to open and close the garage door, maximizing space usage.
SMOOTH ELECTRIC OPERATION
Smoother operation with electric garage door openers when compared to jamb type with track.
Wide selection of jamb type hardware available, accommodating door heights from 6'4" to 12'5", and door weights from 200 to 450 pounds.
Quieter operation than typical sectional doors because of less moving parts.
Less costly compared with installations using sectional doors or jamb type hardware with tracks.
Allows for more eloquent door designs, as the door can remain in one piece versus being divided into sections.
MAJOR COMPONENT PARTS OF ONE-PIECE JAMB TYPE
- Master Plate: for attachment to the door jamb.
- Master Arm: the main load-carrying member.
- Door Angle: for attachment to the door.
- Kicker Assembly: for the attachment of springs to the master arm, for adjustment of spring tension, and, by using the bolt in the slot, for adjustment of spring force in the last 1/4 of door travel.
- Spring Connector Assembly: for the attachment of springs to the kicker and to thechain or lower jamb connector. Also serves to contain the spring if the spring breaks.
- Cantilever Arms: for adjusting the vertical position and angle of the door when in the closed position.
- Extension Springs: for counter balancing the weight of the door.
- Spring Anchor Chain: for attachment of springs to the jamb.
- Lower Jamb Connector: another method for attachment of springs to the jamb. Makes it easier to install and adjust the tension on the springs.
- Fasteners: including pivot points which hold hinge components together, bolts which are used to adjust headroom, spring tension, etc., and mounting hardware.
- Main Pivot: the pivot point connecting the master arm to the master plate.