From publisher blurb:
No time to whip up some planar battle maps? No problem! Here's your solution!
This is the largest Planar Adventures map set yet!
With 62 items, including full concept battle maps and Planar Backgrounds!
But that's not all! Separate planar "island" tiles are included, so, used in combination with the background maps, you may design your own layouts!
Just add monsters!