As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof.
How many hinges do you need on a closet door.
For example a 270 hinge will allow the door to swing back against the cabinet side.
Doors over 60 inches but not over 90 inches need to use 3 hinges.
Some hinges will let the door open just beyond 90 but others offering a much greater degree of opening are available.
Refer to the specifications that came with your hinges to determine how many spring hinges you need.
How many hinges do i need to purchase.
Once you have determined how many interior and exterior doors you have along with the types and sizes of hinges you need for every door you are ready to go shopping.
If you re using hinges that are smaller than 4 inches use one spring hinge on doors.
Take into account how far will the door need to open.
Place the doors face side down on a flat surface and align the doors at the top and bottom.
For pricing and availability.
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Mark the location of the mounting screws drill pilot holes and mount the hinges with the screws provided.
Many hinges per door.
You can get away with two hinges on a light hollow core door but will need at least three on solid core or exterior doors.
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Rehang the doors and check their movement.
Locate the door hinges 6 inches from the top of the doors and then every 31 inches.
Do all trimming and fitting on the door before marking your hinge.
How far or to what angle a hinge will allow a door to open is called degree of opening.
Referring to door height.