Unfortunately we do not have specific information on the spacing of the panels. This home was a gut/remodel, and the woodwork in this foyer was original to the house and was refinished.

Using the stair treads/risers as a basis though, it would appear as if the open part of the panels are approximately 36" x 36" square. You can see on the first full panel on the left side of the picture that it is roughly as wide as 3.5 treads (typically 10"-11") and as tall as 4.5 risers (typically 7"-8"). I hope this helps!

Adam Schmitz
Terra Nova Construction