WS3-M31-24 Shelf Span: 3 Bay, Shelf Depth: 24" Deep, Rack Depth: 31" Deep Features: -Includes cable pass-through holes with grommets for effective cable management. -Shelf spans 2, 3, or 4 bays of MRK Series rack enclosures. -1'' Thick graphite-marbled laminate surface. -Durable black T-mold trim edging. -Sturdy steel-tubes that attach at both front and rear rack rail in each rack bay and extend beneath each writing shelf providing support.. -Note: Precludes the use of two front and two rear rackspaces.. Country of Manufacture: -United States. Dimensions: Shelf Depth 18" Deep - Overall Depth - Front to Back: -18". Shelf Depth 24" Deep - Overall Depth - Front to Back: -24". Rack Depth 26" Deep - Overall Depth - Front to Back: -26". Rack Depth 31" Deep - Overall Depth - Front to Back: -31".