However it is quite rare for anyone to want to do this.
Should openig be same size as garage door.
This will give you room to space the door frame off of the sub.
Measure the distance from the bottom plate of the wall to a point that is 1 1 2 inches higher that the garage door height.
How to frame a garage door 1.
Much more often homeowners seek to increase the garage door size to match vehicles that don t easily fit through the existing opening.
Most entry doors are.
Cut four 2 x 4 trimmers to this length and nail two each to either side of the rough.
As i stated earlier you will want the finished opening to be the same size or slightly smaller than the door.
Garage door openers typically range from 1 3 to over 1 horsepower.
Just add 2 to the width of the actual door size.
Pull a measurement from the floor of your space to the ceiling next to the door opening.
From a structural standpoint it is fairly easy to reduce the size of the opening in a garage thus creating the need for a smaller garage door.
Framing rough opening sizes are really quite simple.
Look for an opener that has the horsepower necessary for your garage door size based on size and weight.
An opener with at least 1 2 horsepower is common for residential use.
Cut two 2 x 6 pieces of lumber and attach to the face of the wall running from the edge of your garage door jambs to the ceiling of your garage.
Once again it should be obvious that if you have an arched opening the height would be the same as the highest point of the arch.
This lumber will be used to attach your garage door track and a portion of your assembly.
Getting the rough opening size right the first time will save you from frustration when installing your doors.
While a door width of 36 inches is oversized for an interior door it s the standard size for front doors.
The standard height remains the same however at 80 inches.