These slatwall panels are easy to handle and packaged for economical shipping. The 4W x 2H panels have a 3" on-center grooves. Two panels per package that covers the same square footage as our standard 8 x 4 panels. The slatwall panels have a 3/4" thick MDF construction. These raw slatwall panels are paintable, so you can choose the color to match your store decor. We do recommend to use a primer before you paint.