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Lau’s galvanized steel, low leakage control dampers offer sturdy, steel construction with interlocking frame design.  The damper locks together without bolts, screws, or rivets that could shake loose.  Frame corners are internally braced to reduce racking.

Axles positively lock to blades without screws or welds.  Non-stick, non-corrosive bearings assure long life and ease of operation.  Axles and bearings combine with a shake proof linkage for low maintenance operation.

When tested in accordance with AMCA Standard 500, our galvanized steel commercial control dampers also exhibit low leakage rates that meet the frequently specified, 10 CFM/sq. ft. at 4” w.g. level.

C302 Galvanized Steel, Low Leakage Commercial Control Damper Catalog

Control Damper Installation Instructions

Control Damper Operating & Maintenance Instructions

Supplemental Installation Instructions

Flange Frame Options

Spring Return Direct Coupled Actuator Installation Sheet

Technical Information

Control Damper Multiple Section Details

Minimum Torque Requirements for Commercial Control Dampers

Accessories

Commercial Control Damper Actuators

SP100 Spec Sheet