Which of these does NOT qualify as "Specialty drywall"?

Specialty drywall refers to specific types of drywall that have unique characteristics or are designed for particular applications beyond standard drywall. Fire-resistant boards, moisture-resistant boards, and soundproof boards are all rated as specialty products because they fulfill particular needs in construction or renovation, like enhancing safety, resisting mold growth, or reducing sound transmission.

Standard drywall sheets, typically measuring 4' by 12', do not possess any special properties that distinguish them from regular drywall. Their dimensions and general composition do not provide any enhanced performance in regard to fire resistance, moisture resistance, or soundproofing, which are the crucial factors that categorize other types of drywall as specialty products. Therefore, standard drywall sheets are the correct response as they do not qualify as specialty drywall.