Image Item No. Description By  4864b  Panel 1 x 2 x 2 - Hollow Studs Catalog: Parts: Panel 1  87552  Panel 1 x 2 x 2 with Side Supports - Hollow Studs Catalog: Parts: Panel 2  2362a  Panel 1 x 2 x 3 - Solid Studs Catalog: Parts: Panel 1