WS Series Laminate Writing Shelves feature an attractive 1" thick graphite-marbled laminate surface with a durable black T-mold edging. The supplied mounting system consists of sturdy steel-tubes that attach at both front and rear rackrail in each rack bay and extend beneath each writing shelf providing support. Additionally, each writing shelf includes cable pass-through holes with grommets providing effective cable management for laptops, computer keyboards, etc. Each writing shelf precludes the use of two front and two rear rackspaces.