If it s 9ft the opening must be 9ft 3 inches and so on.
Garage door rough in size.
99 of the residential garage doors that we run across are different than these widths.
Measure the head room the distance between the top.
First column in the above chart is in imperial system width x height in feet and second column is in metric measurements garage door width x height in centimeters.
You get the picture.
Step 1 measure the old door if you are replacing an existing door with one of the same size or the new door of choice if you are building a new garage.
1 2 or 1 in one direction of the other will won t typically cause you to have to shop for a non standard garage door size.
Next you will need to know your door height.
9 and 10 feet high garage doors are less common.
Next measure the sideroom or space available on the left and right sides of the opening.
The size of the door will.
Begin by using a tape measure to determine the width and height of the door opening in inches.
Standard garage doors start at 7 tall and increase in increments of one foot.
The width of the rough opening should be 3 inches greater than the width of the garage door you are purchasing.
For instance if the width of the garage door is 8ft the rough opening should be 8ft 3 inches wide.
The rough opening is equal to the size of the door but you need to figure back head and side room before choosing and installing the new garage door.
Most vertical track systems.
For instance if you have a 16 door and are using river stones that are approximately 2 to 2 1 2 you will want the rough opening to be roughly pun intended 16 6.