Marine Dampers

Marine Dampers are United States Coast Guard (USCG) approved for Class A-60 divisions. The Marine dampers were tested at Underwriters Laboratories (UL) in accordance with International Maritime Organization (IMO) Fire Test Procedure Code. Fire and Combination Fire/Smoke dampers can be used in marine and offshore ventilation systems. For Control and Balancing Dampers, consult factory.

Multi-Blade Fire Damper

Models IMO-310 and SSIMO-310 are multi-blade fire dampers that are United States Coast Guard approved. Models IMO-310 and SSIMO-310 features Greenheck airfoil blades. IMO-310 is constructed of galvanized steel and also UL approved. SSIMO-310 is 304 stainless steel construction.

Combination Fire/Smoke

Models IMO-311 and SSIMO-311 are airfoil blade Combination Fire/Smoke dampers that are United States Coast Guard Approved. IMO-311 is constructed of galvanized steel and also UL approved. SSIMO-311 is 304 stainless steel construction.

Downloadable Greenheck Literature
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USCG Approval Certificate (185k)

ABS Approval Certificate (130k)

ABS Certicate of Design (150k)

Catalog:

Marine Products - Dampers, Louvers and Fans (899k)

Submittals:

Fire Damper, Galvanized steel (IMO-310) (607k)

Fire Damper, Stainless steel (SSIMO-310) (609k)

Fire Smoke Damper, Galvanized steel (IMO-311) (719k)

Fire Smoke Damper, Stainless steel (SSIMO-311) (729k)

Installation, Operation and Maintenance Manuals:

Marine Dampers - USCG Approved (#464603) (246k)