CMU | Fire Ratings

Ernest Maier will furnish Concrete Masonry Units that can provide a fire rating resistance in excess of one, two, three and four hours as evidenced by the ratings shown in IBC 2003 or National Concrete Masonry Association Tek Note 7-1C. We are also listed as an approved manufacturer with Underwriters Laboratories and manufacture Certified UL CMU to be used in various UL Designs.