Split Face Block Marble Face Marble Face Polished Smooth Face Block NRG Block Metropolitan Quik-Brik Dufferin Stone Weathered Face Noise Absorption Block Masonry Accessories Anchor Noise Absorption Block Anchor Noise Absorption Block C.M.U.'s are structurally sound load bearing units, the same as standard Anchor C.M.U.'s. Since they are conventionally installed, they are cost effective when compared to other acoustical systems. Their durability and fire ratings make them attractive for use in industrial plants, recreation centers, generator rooms and any application whereby noise control is desired. Since Anchor Noise Absorption C.M.U.'s are installed horizontally, noise is absorbed in all directions, providing a balance of noise absorption superior to other acoustical systems. Type-I (with inserts) is used for building interiors. Type-II (without inserts) is used in high humidity or wet areas such as building exteriors, water treatment plants, and natatoriums.