Regal Pak ® White Full Size 1 H Stackable Plastic Tray With Beige Linen Pad 14-1/8 X 7-5/8 (Jewelry Not Included)

Do you sell just a single white, plastic tray? I already have a linen pad. I purchased your 3 pack of trays, but I need one more. :-)

How many trays are included?

are the outside dimensions the ones listed in the title? Or are those the dimensions of the pad?

Is the linen pad removable, also is the surface in the tray smooth like plexiglass?