Lloyd Industries 55CRD-EA-8 Ceiling Radiation Damper 8 in

Product Description

The LLOYD INDUSTRIES 55CRD-EA-8 is an 8-inch round ceiling radiation damper designed to limit the transfer of heat through ceiling membrane penetrations in fire-rated floor-ceiling and roof-ceiling assemblies. This unit carries a 3-hour fire rating, making it suitable for installations where code requires a high level of passive fire protection. It is factory-built to close automatically in the event of elevated temperatures, preventing radiant heat from breaching the rated ceiling membrane. Ceiling radiation dampers of this type are installed by licensed HVAC technicians and fire-protection contractors working within fire-rated construction.

The 55CRD-EA-8 is used in residential and light commercial construction wherever HVAC ductwork or light fixtures penetrate a fire-rated ceiling membrane. It is positioned within the ceiling cavity at the point of penetration, functioning as a passive fire-barrier component integrated into the supply or return air path. This model is the round configuration of the CRD-55 EA series, sized at 8 inches in diameter to match standard round duct openings at that dimension.

Key Features

• 3-hour fire rating for use in high-demand fire-rated ceiling assemblies
• 8-inch round configuration matches standard round duct penetrations
• Passive operation — closes automatically under elevated temperature conditions without requiring power or controls
• Designed to maintain integrity of fire-rated floor-ceiling and roof-ceiling membrane assemblies
• Part of the CRD-55 EA series with available specification sheets and installation documentation

Compatibility

Designed as an OEM-style ceiling radiation damper for use in fire-rated ceiling membrane penetrations requiring a 3-hour passive fire barrier at 8-inch round duct openings.

Installation Notes

Installation must be performed by a qualified HVAC or fire-protection contractor in accordance with the International Mechanical Code and applicable local fire codes. The air handling system must be shut down and de-energized before beginning work. Follow the manufacturer-provided CRD-55 EA installation instructions for proper orientation, fastening, and clearance requirements. Do not modify the damper frame or blades, as alterations may void the fire rating.

Technical Specifications

• Shape: Round
• Diameter: 8 inches
• Fire Rating: 3 Hour
• Specification Reference: PWF38.088

Standard Information

• Brand: LLOYD INDUSTRIES
• Manufacturer Part Number: 55CRD-EA-8