TM Cobb Moulded Interior Doors
I think that these panel interior doors are just a great value. You can change the look of your whole house without spending a fortune. They can frequently be installed on the existing door jambs for a savings in materials and both installation and painting labor. Most of them are available with either a smooth surface or an embossed wood texture grain and can be solid or hollow core.
They are available in a wide range of standard widths and heights and many are available as bifold door units. Click here to see spec sheet. Print is pretty small but you should be able to click on the image to increase the size and scroll up and down.