How to Determine the Door Size

To determind the correct size of a door, you need to measure the existing opening width and height. Measure the width in three places: top, middle and bottom. Record the smallest one.

Measure the thickness of the wall. If the wall is thicker than 5.5 inches, you will need an extension plank.

Ville Doors stock slab doors sizes:

Height: 78 3/4″
Width: 18″, 23 1/2″, 27 3/4″, 29 1/2″, 31 1/4″ or 35 1/2″
Thickness: 1-1/2″

Door frame thickness is 1″. Door opening should be at least 3″ wider and 2″ higher than a door slab.

Door Size Chart

US Standard Door Slab Width, inch	18	24	28	30	32	36
VilleDoors Slab Width, inch	18	23 1/2	27 3/4	29 1/2	31 1/4	35 1/2
Min Rough Opening Width, inch	21	26 1/2	30 3/4	32 1/2	34 1/4	38 1/2
Max Rough Opening Width, inch	23 3/4	29 3/4	33 1/2	35 1/4	37	41 1/4