MFD-GB-F-20-A-R Fire Damper 1.5 hr UL-555 Galvanized Steel

The MFD-GB-F-20-A-R is a high-performance fire damper designed to prevent the spread of fire and smoke through HVAC ductwork. Certified to UL-555 standards with a 1.5-hour fire rating, this damper ensures critical safety compliance for commercial and industrial building projects in Saudi Arabia.

Constructed with a robust 16-gauge (1.4 mm - 1.7 mm) galvanized steel frame and parallel-operated 'V' type blades, the damper offers durability and reliable operation. It features stainless steel jamb seals and silicon rubber blade seals to maintain airtight integrity. The unit includes a 12 mm diameter galvanized steel jack shaft and a mild steel spring (30lb) for mechanical reliability. Thermal response is managed by a 165°F (74°C) fusible link and Thermal Response Device (TRD), ensuring automatic closure in the event of a fire (Fail Close).

Designed for integration with Building Management Systems (BMS), the damper includes limit switches for open/close indication and an externally mounted visual indicator. It supports various actuator types, including Honeywell models at 24V AC, 120V AC, and 230V AC. The product complies with SMACNA, NFPA, IBC, BOCA, and ICBO standards, ensuring it meets rigorous international safety and construction requirements.

• UL-555 Certified with 1.5-hour fire rating
• 16-gauge galvanized steel frame and V-blades
• Stainless steel jamb seals and silicon rubber blade seals
• 165°F (74°C) Fusible Link and Thermal Response Device
• Compatible with Honeywell actuators (24V, 120V, 230V AC)
• Includes limit switches for BMS integration
• Complies with NFPA, SMACNA, and IBC standards