Nexxt Frames

If the frame is 11x11, the mat must be smaller than 8x10 to appear like in the photo.

Can the mat size be included in all the listings?

Do these include glass? or just frame and double mat?

Is the:

Nexxt PN43600-0 Habitat Collage Frame Black

wood or plastic?

Are the shelves on the Nexxt PN13089-2 Tao CD Holder moveable? (I.E.- can I make the spacing larger to fit DVDs?)