SECTION 233313- DAMPERS

COUNTERBALANCED BACKDRAFT DAMPERS. GENERAL. SECTION INCLUDES. Extruded aluminum, medium to high duty, backdraft dampers suitable for application in HVAC systems with velocities to 2,500 feet per minute (12.7 m/s). RELATED SECTIONS. Section 233100 – HVAC Duct and Casing (Previously 15810) REFERENCES ................
................