Garage Door Rough Opening Size

The garage door rough opening (RO) size refers to the dimensions of the opening in the wall where the garage door will be installed. It is important to determine the correct RO size to ensure that the door fits properly and functions optimally.

The RO size is typically determined by the door manufacturer and is specified in the product's specifications. It is usually expressed in feet and inches, and includes both the width and height of the opening.

To determine the RO size, it is necessary to first measure the garage door you intend to install. Measure the width and height of the door, from the outside edges of the frame.

Once you have the door measurements, refer to the manufacturer's specifications to find the corresponding RO size. The RO size will usually be slightly larger than the door size, to allow for clearance and installation.

In addition to the width and height, the RO size may also include specifications for the header height and jamb width. The header height refers to the distance from the top of the RO to the bottom of the header beam, while the jamb width refers to the distance from the edge of the RO to the inside edge of the jamb.

It is important to note that the RO size may vary depending on the type of garage door you choose. For example, sectional doors typically have larger RO sizes than roll-up doors.

When framing the garage door opening, it is important to follow the manufacturer's instructions carefully and ensure that the RO size is correct. An incorrect RO size can lead to installation problems, improper door operation, and potential safety hazards.

Here are some tips for determining the garage door rough opening size:

Refer to the manufacturer's specifications for the specific model of garage door you intend to install.
Measure the width and height of the garage door, from the outside edges of the frame.
Allow for additional clearance around the door, typically 1-2 inches on each side and 2-3 inches at the top.
Consider the header height and jamb width, if specified by the manufacturer.
Frame the garage door opening according to the manufacturer's instructions and ensure that the RO size is correct.

By following these steps, you can ensure that the garage door rough opening size is correct and that the door will fit and function properly.