This is a PS Products known as the Diversion Books, model DB2BLK.
This set is sold as a nested set" one book of each size. The small book (6 1/4" x 8 1/4" x 2") accommodates small to medium firearms. The large book (8" x 10 1/2" x 2 3/4") easily fits most full-sized handguns.
Features:
Concealment Books
One Large
One Small