Most burglars spend less than six minutes inside a victims home and only have time to check the most obvious places for valuables. With this product you can hide your valuables in what looks like an ordinary book- one of the last places a thief would think to look. Rather than being an actual book with the center cut out, it has a real book cover and a card board insert. When placed on your bookshelf it looks identical to a real book. "Dictionary" and "Novel". Please make your selection in the drop down menu. The outside dimensions of the book are 9 1/2 x 6 3/8 x 1 3/4 inches. The dimensions of the space inside are 8 1/2 x 5 1/2 x 1 1/8 inches.