Inside Width: 16 1/8″ (413mm)
Inside Height: 9 7/8″ (254mm)
Frame Width: 18 1/2″ (470mm)
Frame Height: 12 1/2″ (312mm)
The interior measurement refers to the portion of the door that fits into the opening. We recommend making your masonry rough opening 3/4″ larger than the interior dimensions.
Gasketing and mounting screws are included with the door.