4 9/16inches
Other typical sizes for door jambs are: 4 9/16inches if you have a 2x4 frame and a ½inch drywall. 5 ½inches if you have a 2x4 frame and a thick drywall. 6 9/16inches if you have a 2x6 frame or a block wall.
What is the standard exterior door jamb depth?
49/16"
Measure the depth of the door frame, or jamb. This measurement is to tell you how thick the wall is so it should not include the interior trim or casing, or siding and any trim pieces on the exterior of the door. The most common frame depths are 49/16" or 69/16".
What is the width and depth of jambs?
Standard Door Jamb Width
Standard door jamb widths typically measure 4 9/16inches, 5 12inches, and 6 9/16inches.
How do you measure exterior door jamb depth?
So you don't measure that come behind that. And you'll actually see the actual door frame. And if you measure from here to the back side of the door frame. This is called a mole trim.
How much space should be between door jamb and door?
Ideally, there should be a gap of about 1/8 inch at the top and along each side, and about 3/8 inch at the bottom. Use cardboard spacers or folded matchbooks (four thicknesses equals about 1/16 inch) along with shims underneath to maintain the spacing.
What is the probability of choosing the right door?
It is clear that when you first choose, the probability of choosing the winning door is 1/3. If you stick to your first choice the probability of winning stays at 1/3; nothing that Monty Hall says changes this probability. Since there is a 1/3 probability that your first choice is the prize winning.
Why is the Monty Hall problem not 50 50?
The probabilities do not become 50/50; rather, they remain as they were. The ⅓ chance that the car was behind Door 3 “shifts” entirely to Door 2, resulting in a total ⅔ chance that the car is behind Door 2 and a ⅓ chance that the car is behind the originally chosen Door 1.
Frequently Asked Questions
What are three factors that determine choice of a door type?
 Construction and sealing. First, the quality of the products used in its construction makes all the difference.
 Design. Of course, you have to choose your door according to the style of your home and also take into account your personal tastes.
 Configuration.
What is the rough opening for a 24 inch Prehung door?
Dimensions
Door Height (in.)  80 in  1.375 in 

Door Width (in.)  24 in  49/16" 
Rough Opening Height (in.)  82.438 in  26.063 in 
How much space do you need for a Prehung door?
KNOW YOUR OPENING: Prehung doors are made to fit rough openings 2 to 2 1⁄2 inches bigger than the corresponding dimensions of the jamb. The jamb's depth should match the thickness of the wall, including the plaster or drywall.
How do you measure for a door installation?
Start by measuring the width of the prehung door from the interior. Measure from one side to the other of the door panel, or the part that swings. To find the door height, measure from the top of the door panel to the bottom on the edge of the door. Measure the door thickness and door jamb width.
How do you measure a door entrance?
Opening. That's from one edge of the frame. To the opposite edge of the frame. Then we'll take the vertical measurements in the same manner.
FAQ
 How much gap do you need to install a door?
A well fitted door should have a 2mm gap on either side and at the top. The gap at the bottom will depend on the thickness of your flooring/carpet.
 What are the measurements for a door in construction?
Standard Exterior Door Size
By IRC building codes, exterior doors are required to be a minimum height of 80 inches. The standard exterior door size is typically 3 feet wide and 80 inches high. Examples of an exterior door include an entry door, back door, garage entry door, or fire/security door.
 How much space needed for a double front door?
Doing some basic measurements will help you identify if double doors will work for you, for example standard front doors are 36inches wide and weâ€™d suggest at least a 60inch or 5 foot space to offer enough space for standard size double doors with each being 30inches wide.
 How do you measure for an interior door replacement?
Then you'll take two measurements for the height. One of the left. And right again measuring from the top rough opening down to the floor. Surface.
What is door jamb depth for entry door and 2 x 4 construction
How do you measure a Prehung interior door for replacement?  Again. Note the smallest measurement if there is an existing door present carefully remove the trim. From one side of the door. Take the smallest height. 
How do I know what size interior door to buy?  When replacing an existing door with a prehung door, select a door that has the same dimensions as the existing one. Standard widths for interior doors are 24, 28, 30, 32 and 36 inches, while the height must be a minimum of 80 inches. For a slab door, measure the width, height and thickness of the door. 
What is the rough opening for a Prehung door?  Standard Rough Opening Sizes The way this is determined is, take the desired prehung door size (door size not including the frame) and simply add 2" to the width and roughly 2.5" to the height. That's it. This extra 2" gives room for the door's frame as well as a little extra play for getting the door perfect. 
What you need to know to order a door?  Consider the following factors when ordering doors:

 Do I need Prehung doors for new construction?
 If you're constructing a new home, preparing to replace old framing, or just want an entirely new look, you'll likely want to choose prehung doors. If you plan to replace a door with a new door of the same size and setup, changing the whole unit with a prehung is easiest, but slab doors are also a viable option.
 How do you install a new door in new construction?
 Steps to complete
 1) Check door unit.
 2) Prepare opening.
 3) Sill pan installation.
 4) Place unit in opening.
 5) Shim jamb at hinge locations.
 6) Adjust and fasten lockside frame.
 7) Complete jamb fastening and install hardware.
 8) Adjust sill and dollar bill test.
 Steps to complete
 Do you install doors before or after flooring?
 It's always better to have the floors put in first. You can do the door first but then the floor installer will use a special jamb saw to remove 3/4″ off of the jamb to slide the floor in place. This also at the same screws up the door spacing. The door may be too long for the opening now.
 What is included in a door?
The door's hardware includes the locking mechanism, handle, and hinges. The locking mechanism and handle secure your home and allow you to operate the door. The hinges connect the door slab to the jambs, allowing the door to swing open and closed.