The FSDR-512 is a round combination fire smoke damper with round blades. This model installs in walls, floors, and partitions and is rated for airflow and leakage in either direction.

Box Knife

Steel double deflection supply grille, 3/4" blade spacing, front blades parallel to short dimension FEATURES AND BENEFITS Available with front louvers vertical or horizontal Optional opposed blade damper has screwdriver adjustment accessible through face of register Front and rear louvers are individually adjustable Insect and debris screens are not available when dampers are fitted Material is steel #8 x 11/4” lg. Phillip’s flat head sheet metal screws (painted) All dimensions are ± 1/16”