681 Steel Register with One Way deflection

680 Series all - steel construction

Available in one way deflection (681),two way deflection (682), three way deflection (683), or four way deflection (684)

1/2inch fin spacing set at 40 degrees

Multi-shutter vlave

1 5/8 inch depth when fully opened

Used for ceiling or sidewall installations

Interlocking valve louvers for positive shut-off

Ideal for shallow duct installaions

Dover white enamel finish

Height is always 6 inches (measured by hole) Order by size!