Drywall Products Regular Drywall 5/8″ type “X” available in both 8′ and 12′ sheets 1/2″ available in both 8′ and 12′ sheets54″ available in 12′ only – 5/8″ and 1/2″Lightweight Non Type-X available in 12′Exterior sheathing available in 8′ Specialty Drywall Quietrock Sound Board available in 8′Densglass Fiberglass Exterior SheathingMold Defense available in 1/2″ and 5/8″ in 8′ and 12′ sheets