Aluflam's fixed storefront vision wall frames are constructed from thermally broken narrow aluminum extrusions filled with a proprietary fire blocking material. They are available in a 60 minute rating for interior and exterior installation. Vision wall products are fully tested and listed by Underwriters Laboratories to UL 263 and UBC 7-4 (1997) standards. All Aluflam fire-rated products are MEA approved for use in the City of New York.