Fire Rated Duct Market Size, Share & Industry Analysis, By Type (Galvanized Steel Duct, Aluminum (Al) Duct, Flexible Duct, Fabric Duct & Others), By Shape (Round, Half Round, Square/Rectangular, Triangular & Others), By Penetration (Walls, Floor, Decks & Others), By Application (Public Facilities, Commercial Facilities, Industrial Facilities, & Others), and Regional Forecast, 2021-2028