The Wind's Twelve Quarters has 303 pages.
At Close Quarters has 276 pages.
The Winds of Dune has 448 pages.
Temple of the Winds has 528 pages.
The Winds of Darkover has 139 pages.
Verdict of Twelve has 273 pages.
Five Quarters of the Orange has 432 pages.
The House of the Four Winds has 318 pages.
There are four quarters in a whole. Since a dozen consists of twelve, you can divide twelve by three to find that there are four quarters in a dozen.
Twelve Sharp - novel - has 320 pages.
Twelve Days of Terror has 330 pages.
Doomsday Plus Twelve has 230 pages.
Nebula Winners Twelve has 242 pages.