What standard sizes are interior doors available in?

Doors are readily available as standard in the following sizes

2032mm x 813mm (6'8" x 2'8")
1981mm x 762mm (6'6" x 2'6")
1981mm x 711mm (6'6" x 2'4")
1981mm x 660mm (6'6" x 2'2")
1981mm x 610mm (6'6" x 2'0")
2032mm x 864mm (6'8" x 2'10")
Some glazed doors may not be available in all sizes.

Most engineered doors have a 12mm solid slip at the edge to allow for very minor planing to size