4" Vent Support Plate

The Hart & Cooley 502820 Vent Support Plate (Model 4FSP) is a firestop and structural support component designed for use in Type B gas vent systems. Engineered for code-compliant installation, the plate provides both mechanical support and fire separation at floor, ceiling, or roof penetrations. Constructed for durability and dimensional precision, it ensures proper vent alignment and spacing through combustible assemblies while maintaining the integrity of the venting system.

Details

• Model Number: 502820
• Manufacturer: Hart & Cooley
• Product Type: Vent Support Plate / Firestop Support
• Part Number: 1982318
• Nominal Vent Size: 4 inch (Type B Gas Vent)
• Outside Diameter: 6-1/2 inch
• Skirt Length: 4-1/2 inch
• Material: Galvanized Steel
• Application: Structural support and firestop for vertical vent penetrations
• System Compatibility: For use with Type B Gas Vent Systems
• Mounting: Secured at framing openings using mechanical fasteners per manufacturer specifications
• Compliance: UL Listed for use in venting installations per NFPA 54 and NFPA 211

Professional Specifications

The 4FSP Firestop Support Plate is manufactured from heavy-gauge galvanized steel for rigidity and corrosion resistance in venting applications. The unit provides both vertical load-bearing capability and code-required firestop spacing for 4-inch Type B gas vents. Its formed flange ensures proper vent clearance through combustible structures while maintaining alignment with adjoining vent sections. The component integrates within Hart & Cooley vent assemblies, ensuring system compatibility and ease of installation in multi-story or roof-penetrating systems.

Summary

The Hart & Cooley 502820 (4FSP) Vent Support Plate delivers a durable, UL-listed support and firestop solution for 4-inch Type B gas vent installations. Its precise construction and standardized dimensions ensure reliable vent alignment, load support, and code-compliant separation at framing penetrations in professional HVAC and mechanical systems.