The rough opening would be 40 1 2 x 86 1 4.
Rough opening for interior french doors.
Now all you need to know is how to properly frame your door rough opening.
A typical header can be a four by eight or four by ten inch beam for two by four walls.
For a 3 0 x 7 0 door frame.
To correctly determine the size of a rough opening for double or french doors measure the size of each door.
Rustic knotty alder 2 panel sq top vg both active solid core wood double prehung interior french door model phid ka 305v 60 68 138 aa 889 00.
Krosswood doors 60 in.
Stile and rail constructed french door slabs prehung on 4 9 16 in.
B opening height 2 1 4.
Whether you re buying a pre hung french door or constructing the frame from scratch accurate measurements of the rough opening are essential for a proper fit.
The horizontal support that spans the rough opening at the top of the door is called the header.
A opening width 4 1 2.
Timely prefinished interior steel frame.
Rustic knotty alder 2 panel arch top both active solid core wood double prehung interior french door 2 model phid ka 121 50 68 138 aa.
I prefer to have my rough openings at least one half inch wider than the overall unit size of the door.
To get the total width multiply the width of each door by 2 and add 2 inches.
The length of this opening has to be 54 1 4 inches the distance that you calculated in step 1.
So if you have a bedroom door that is 30 wide which is considered a 2 6 or 2 6 door just add 2 to the width and frame it 32 wide.
This will give you room to space the door frame off of the sub floor.
Of frame is 40 x 86 as the frame face is 2 around all 3 sides.
You should add 2 1 2 to the height of the actual door.
Use shims and or caulk to seal gaps between wall and frame.
It s important to realize the first thing to get right as you begin to tackle your double interior french doors is the rough opening.
This unit comes with a 4 9 16 in.
So if each door measures 30 inches wide the width of the rough opening should be 62 inches.
This is the hole in the wall where the door fits.
Cut the portion of the plate out that will form the opening for the french doors.
Framing rough opening sizes are really quite simple.
Just add 2 to the width of the actual door size.
Unit dimension is 73 5 in.
The suggested rough opening is 74 in.
Ideally the rough opening should be.