These Brochure Holders have slender, sturdy 1/8" sides. The carton has a flat base to make it easy to use as a stand-alone unit or to accompany a slatwall. These Brochure Holders are constructed of a solid, sturdy acrylic material. The fixtures have to slot inserts to allow easy assembly and moving with the slatwall. These Brochure Holders are made to hold 4" x 9" pages, advertising your favorite items, products, events or causes.