This compact keyboard drawer with 18-1/2″ tray is economical. The smaller size and a proven manufacturing process afford these products their economic advantage. Under-desk, sliding drawer keyboard systems are a good alternative to articulating keyboard systems. Each ECLIPSE slide drawer system features a solid MDF Core (3/8” thick), covered in a 3 dimensional laminate vinyl sealed over the surface. Lock-out feature on drawer slides means the tray will not retract back under the work surface until it’s pushed back.