Is GKLV or

Drywall is produced in different versions: GKL, GKLV, GLClus and GKLVO. Simple drywall is noted as GKL and looks like a gray panel. If the panel has a green color, then it is GKLV or moisture -resistant drywall. Fireproof drywall (GCLO) is stained with pink, and green can also be moisture -resistant drywall with increased flame resistance (GKLVO).