Gypsum Area Separation Firewalls – GA-620-2025 (PDF Download)
Gypsum Area Separation Firewall systems provide the advantages of both fire-resistance and noise reduction between neighboring townhouses and other attached dwelling units. Gypsum Area Separation Firewalls are efficient, nonloadbearing, 2-hour fire-resistance-rated gypsum panel systems that can provide code compliant STC ratings exceeding 60.