These numbers should be close to the same but it can be helpful to know both of them.
Measure for sliding door.
Then you will want to measure the height of the doors as well again do three measurements one from top to bottom on the left one in the middle and one on the right.
Move halfway down the opening and measure again.
The average widths for two panel doors are sixty inches seventy two inches and ninety six inches.
You ll want to measure the width of the door at the center running your tape measure from siding to siding stucco to stucco brick to brick whatever material outlines the sides of your sliding door.
If your sliding screen doors are missing determine width by measuring from inside of side jamb to center of stile on opposite side just short of where the stationary glass begins.
Remove the slider door trim with a crowbar.
Do this across the bottom middle and top.
To measure the height of a sliding patio door extend your tape measure vertically.
Go to your sliding glass door and take a measurement from the wall left to right of the door to the wall it is installed in.
Again depending on the style of your home measure from the header to the bottom of the door sill siding to the bottom of the door sill or edge of the stucco to the bottom of the door sill.
Ideally the door will cover 2 to 3 inches beyond the opening on each side.
Write down the measurement.
The most common thickness is 1 75 inches 4 4 cm.
Cut away all the old silicone and paint attached to the door.
Custom built sliding glass doors meet and or exceed these measurements.
Insert a utility knife around the door frame and break the silicone seal.
Using a tape measure begin at the left edge of the opening and measure straight across to the right edge.
Hold a tape measure to the edge of the door and record its thickness.
Measure this edge on the door frame known as the jamb as well.
How to measure for replacement sliding glass patio doors.
If the doorway has moldings measure from outside edge to outside edge to determine the proper door width add about 4 to 6 inches to your measurement.
Be sure to capture both width and height measurements.
Pull out any.
Be careful not to damage it.
Write down the measurement.
Measure vertically the same way from where the header meets the rest of the home to where the bottom sill ends.