Winter Room is by Gary Paulsen. It has 116 pages. It was a Newbery Honor Book.
"The Upstairs Room" by Johanna Reiss has 192 pages.
Blackthorn Winter has 352 pages.
The Center of Winter has 352 pages.
A Dark Winter has 328 pages.
In Winter's Shadow has 304 pages.
In the Winter Dark has 132 pages.
The Winter Knights has 384 pages.
Winter Kills has 304 pages.
Winter's Heart has 668 pages.
Winter Hawk has 605 pages.
Winter in Madrid has 511 pages.
The Winter King has 434 pages.