The DB-19 Drawboard may be used in lieu of the SB-19 Stack Brackets when the CD-4, CO-6, CO-8, CD-14 or the CD-18 are stacked on any other inner-vault cabinet. The DB-19 Drawboard provides a handy 15” sliding worksurface. The DB-19 Drawboard increases the height of the stacked unit 1-1/4”.