## Standard Door Rough Opening

Important Point

A rough door opening is referred to as a framed opening that will fit into and has the same size as that of the door itself. It is the measure of the space required around a door.

The size will be varying on the wooden species and the door’s thickness. If you want to measure the rough opening for your door you will have to add two inches to the width then it will easily fit into the typical opening for an internal door.

After that, you will have to add two and a half inches to your door’s height. The width calculating formula is Your Door’s Inches + 2 inches (width) = Rough Door Opening.

The height calculating formula is Your Door’s Inches + 2 and ½ inches (tall) = Rough door opening.

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## Rough Opening for 24 Inch Door

By adding 2 inches to the width, you get the rough opening size for 24 inches door.

So, for 24 inches door, the rough opening size will be 26 inches.

## Rough Door Opening for 28 Inch Door

Similarly, after adding 2 inches to the width, you will get the rough opening for a 28 inches door.

30 inches will be the rough door opening width for a 28 inches door.

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## What Is Rough Opening for a 24 by 80 Inch Door?

For a standard door having a width of 24 inches width and a height of 80 inches the space required for a rough opening required for you will be a width of 26 inches and a height of 82.5 inches for a snug fit.

This is so because for a standard door of 24 inches the width of the rough opening will be 2 inches extra along with an extra 2 inches in height.

## What Is Rough Opening for a 28 by 80 Inch Door?

If you have a standard door of 28 inches in width and a height of 80 inches then the rough opening required for you will be the width of 30 inches along with the height of 82.5 inches.

This is so because in a standard door of 28 inches the width of the rough opening must be 2 inches extra along with the extra height of 2 and a half inches.

### Rough Opening for 36 Door

A 36” x 80” pre-hung single door will use a rough opening of approximately **38-1/2” x 82-1/4”** to fit. Always remember to square up your door before you nail the frame in place to assure it will close properly.

### Door Rough Opening Size

Rough door opening sizes are standard among builders. The way this is determined is, **take the desired pre-hung 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.

### Rough Door Opening

Framing rough opening sizes are really quite simple. Just **add 2″ to the width of the actual door size**. You should add 2-1/2″ to the height of the actual door.

### 32 Door Rough Opening

You’ll need a roughly 34 inches wide and 82.5 inches tall space. For a standard 32-inch door, the rough opening must be **2 inches wider and 2-1/2 inches taller**. That means you’ll need a rough opening of 34 inches to fit a 32-inch door.

### Rough Opening for a 36-Inch Door

For a 36″ x 80″ pre-hung door, you’ll need a **38.5″ x 82.25″** rough opening for it to fit snugly. Always ensure that your door is aligned and squared before nailing the frame in position so it will close correctly.

### Rough Opening for a 30 by 80 Inch Door

What Rough Opening For a 30-Inch Door? Suppose you have a single door that is 30 inches wide and 80 inches tall. You’ll need a roughly 32 inches wide and 82.5 inches tall space. For a standard 30-inch door, the rough opening must be **2 inches wider and 2-1/2 inches taller**.

### Rough Opening for 28 Inch Door

For a standard 28-inch door, the rough opening must be **2 inches wider and 2-1/2 inches taller**. That means you’ll need a rough opening of 30 inches to fit a 28-inch door.

### Rough Opening for 30 Inch Door

You’ll need a roughly 32 inches wide and 82.5 inches tall space. For a standard 30-inch door, the rough opening must be **2 inches wider and 2-1/2 inches taller**. That means you’ll need a rough opening of 32 inches to fit a 30-inch door.

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