Doors over 90 inches but not over 120 inches 4 hinges are recommended.
Number of door hinges per door.
For example if you have a 1 3 4 thick door that is 8 0 by 3 2 and made out of oak you would calculate the square inches of the door 96 x 38 3648.
The result is your door weight in pounds.
However more hinges may be required per chart below.
In our experience the following number of hinges has been proven and tested.
It is important to consider the weight of the door including additional weights such as handles.
Number of hinges per door as a general rule you will want to use 1 hinge per every 30 of door or fraction thereof.
Doors up to 60 need two hinges.
Directions after determining the weight and width of the door draw a straight line through the door width and weight to.
Referring to door height.
Doors up to 60 inches need 2 hinges.
Referring to door height.
As a general rule you will want to use 1 hinge per every 30 inches of door or fraction thereof.
As a general rule you will want to use one hinge per every 30 of door or fraction thereof.
The door height also affects the number of hinges required.
Doors over 60 inches but not over 90 inches need to use 3 hinges.
Doors 90 120 need four hinges.
2 hinges are optimal for door weights of 4 6 kg.
Doors 60 90 need three hinges.
Doors up to 60 2 hinges doors over 60 but not over 90 3 hinges doors over 90 but not over 120 4 hinges.
To calculate your door weight multiply the size of your door in square feet times the number in the chart above pounds per square feet.
For example a 90 door needs three hinges and a 91 door needs four.