NCA Manufacturing provides a wide array of fire dampers for applications that are UL-, ULC-, and California State Fire Marshall-listed. NCA fire dampers can be provided in vertical or horizontal orientations and for static and dynamic HVAC systems. NCA offers one-and-a-half- and three-hour; curtain-style and multiblade; integral-sleeve; Type A, B, and C; slimline and ultraslimline; out-of-wall; and true round models.