If you re using hinges that are smaller than 4 inches use one spring hinge on doors weighing.
How many spring hinges need on a door.
Doors 60 90 need three hinges.
The torsion spring distributes the garage door s weight evenly which is critical with a wide and or extremely heavy door.
A pair of hinges is two complete sets of hinges as displayed below.
Refer to the specifications that came with your hinges to determine how many spring hinges you need.
Most doors have three.
The most common type of butt hinge is a five knuckle hinge.
A couple things to make a note of before purchasing your door hinges.
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Most hinges today are sold in pairs.
Use two hinges for doors up to 60 inches tall use three hinges if the door is between 60 and 90 inches tall for doors between 90 inches and 120 inches use four hinges if your door is between 37 inches and 120 inches wide installing an extra hinge will supply added strength to support the additional weight and tension being applied to the frame.
Doors 90 120 need four hinges.
Door with a width greater than 37 and up to 48 an extra hinge can be used for additional strength the extra hinge helps support the additional weight and tension applied to the frame created by the wider door width.
Unfortunately if you only had to replace hinges for one door you would need to order two pairs of hinges.
Standard torsion spring install supplement 637kb.
This will reduce the friction and allow the door to close more smoothly.
Referring to door width.
Features standard torsion spring supplemental install instructions.