For a garage attached or detached from your house of around 18 x 24 feet most popular width for a garage door is 16 feet.
Normal height of garage door.
Measure the backroom the distance from the garage door opening to the back wall of the garage.
A garage will need backroom that equals the door height plus 18 inches and possibly more based on the installation of an automatic garage door opener.
As for the height it is 7 or 8 feet.
Double car garage doors typically start at 12 feet wide and move.
You should reconsider the specifications for your garage door if you have multiple vehicles or a large vehicle to park inside.
Well normal garage doors measure 8 x 7 feet 9 x 7 feet and 10 x 7 feet all around.
For a shed the best size for installing a garage door is 8 x 14 feet.
Custom doors range per home.
If you have an rv the door can go up to 10 feet.
2 a double door.
Then the garage door would be 6 x 6 6.
Double garage doors have a width of 12 to 16 feet.
Single garage doors are a height of 7 feet with widths from 8 to 10 feet.
For an approximately 12 x 22 detached garage or one attached to your house the most common width is 8 or 9 feet as for the height it is 7 or 8 feet however in terms of height it can go up to 12 feet to accommodate an rv.
Use a step ladder to more easily measure the ceiling height.
Rv garage doors are taller with a height of 8 to 9 feet and width of 16.