SPECIAL ORDER ITEM. Review Returns Policy before purchase. Designed for reliable installation within the Duofix collection, these frame mounting screws provide a secure and efficient solution for fastening in-wall carrier frames to steel stud construction. The self-tapping design allows for quick, precise installation without pre-drilling, reducing labor time while ensuring strong holding power. Galvanized for durability and corrosion resistance, they help maintain long-term structural stability in concealed plumbing assemblies. Ideal for wall-hung toilet, bidet, and washbasin carrier systems, these screws ensure proper alignment and dependable load support, contributing to a clean, professional finish and long-lasting performance in residential and commercial bathroom installations.