N C A Mfg.
Garland, Texas N C A Mfg. specializes in the design and manufacture of dampers, louvers and related accessories for HVAC systems. Our products include curtain fire dampers, ceiling dampers, smoke dampers, fire and smoke dampers. We also offer louvers, formed steel louvers, balancing dampers and barometric dampers. More...
www.ncamfg.com

Leader Industries, Inc.
Nashville, Tennessee The Leader Dampers & Louvers Division carries a full line of UL classified life safety products including static and dynamic fire dampers, leakage rated smoke dampers, combination fire/smoke dampers, ceiling radiation dampers, air control dampers, & access doors. Louvers include 2", 4", & 6" formed More...
www.leaderindustries.com