FD4-3B

3 Hour - Static Fire Damper

Overview

The FD4-3B fire damper employs tcurtain style blades for point-of-origin control of fire in static HVAC systems. The FD4-3B may be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 4 hours.

Resources

Product Sheets

PDF FD4-3B Product Sheet

Installation Instructions

PDF FD43 Horizontal Installation Instructions
PDF FD43 Vertical Installation Instructions
PDF Flange System Breakaway Installation
PDF Horizontal Support Mullion Installation
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PDF Sleeve Termination Installation
PDF UL-V5 Ventilation Duct Assembly
PDF Removable Duct Section Installation

Accessories

PDF FD Operation and Maintenance

Standard Construction

Frame: 22 ga. (0.85) galvanized steel.
Blades: 24 ga. (0.7) galvanized steel - curtain.
Fire Closure Device: Fusible link.
Fire Closure Temperature: 165^oF (75^oC)
Minimum Size: Vertical Mount: 4" x 2" (102 x 51)
Horizontal Mount: 6" x 8" (152 x 203)
Maximum Size: Single Section: Vertical: 36" x 33" (915 x 838)
Horizontal: 38" x 33" (965 x 838)
Multiple Section: Vertical: 108" x 21" (2743 x 533)
Horizontal: 76" x 93" (1931 x 2362)
Stainless Steel: Single Section: Vertical: 36" x 21" (914 x 553)
Multiple Section: 108" x 21" (2743 x 533)

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