Do you mean 5 panel doors?

Pocket doors roll in and out of the wall.

Panel doors are designed to avoid having the entire door expand and contract as a single slab of wood.

The panels are actually trapped but not attached in their grooves (except maybe a single spot in the middle of the top and bottom to prevent rattling).
The panels can change width without the entire door getting wider.

to Brickeyee
thanks for the post thats what I ment 5 panel doors they are really heavy I removed paint on one door had to many layers of paint about 12 I guess lot of lead paint not sure what wood it is made of but it was made real well.. Another question?? Where can one find reproduction doors that are made the same .. I have all orig doors except for two would like to find out why prev owner threw two doors away. they seem to soild to possibly damage wonder what prev owner was thinking while he was what I call reno wrecking ive spent serious time undoing his mistakes... JB

jbengo, have you tried to find architectural salvage yards near where you are? Chances are you'll be able to find a close match to the size and style you need. We've had great luck at 3 or 4 salvage yards within an easy drive of our house (DC metro area). Where are you located?

We often wonder what the previous owners were thinking ;) We are in Chicago and got 3 beautiful doors from someone replacing them from an old apartment building. They were posted on craigslist.

To arlosmom:
Thanks thats a great idea, I will attempt to find a historic salvage place in my area.. Anyone on the forum know of one in the Southern New Jersey area. Like I mentioned I was surprised the prev owner had left any orig doors at all because regrettfully he reno wrecked just about everything else within reach.. I only have the orig baseboard trim left in only one bedroom and two closets... Everywhere else the wood trim is gone. What few trim is left is over 7 inches tall really carved and is put together in a amazing way. Where I have investigated the wood trim looks to be chesnut can't believe someone would be foolish to throw that away but other owner did just that what a loss.... JB

Most full service lumber yards either have or can order solid wood panel doors in just about any style.

If push comes to shove they can often even make them.

The trim patterns used on the doors vary by area of the country, but exact matches for even old patterns are usually available.

I use a lumber yard that has been around over 100 years near Alexandria, Virginia and they can produce the exact same profiles they used 100 years ago.

I see old doors, including 5-panel, at our local Habitat Restore all the time. And the are cheap too!!
Diane

"I see old doors, including 5-panel, at our local Habitat Restore all the time. And the are cheap too!!"

Make sure you use a large straightedge (I use a 6 foot level) to check for warping.
Once a panel door has warped it can be very hit or miss if it will ever flatten out again and stay flat in use.

I pick them up off craig's list all the time for $10-20, while a new slab door in 5 panel is over $150.