8″ Fixed Pattern Diffuser, 4-Way

Product Overview

The Hart & Cooley 050502 Fixed Pattern Diffuser (FPD08) is an 8-inch, 4-way square ceiling diffuser designed for uniform air distribution in commercial and institutional HVAC systems. Part of the FPD Series, this diffuser provides a consistent 360-degree diffusion pattern for even air delivery throughout conditioned spaces. Constructed from durable steel with a bright white baked enamel finish, it is engineered for compatibility with standard 24 x 24-inch ceiling grid systems and ensures reliable performance with minimal maintenance.

Technical Specifications

• Manufacturer: Hart & Cooley
• Model Number: 050502
• Series: FPD (Fixed Pattern Diffuser)
• Description: Fixed 4-Way Ceiling Diffuser – 8 in
• Reference Number: 201030
• Nominal Neck Size: 8 in (203 mm)
• Face Type: Fixed 4-way pattern, square configuration
• Face Dimensions:
  • Width: 23-3/4 in (603 mm)
  • Height: 23-3/4 in (603 mm)
• Air Pattern: 360° diffusion for uniform air distribution
• Construction: Precision-formed steel diffuser face and frame
• Finish: Bright white baked enamel coating for corrosion resistance
• Mounting Type: Lay-in type for standard T-bar ceiling grid systems
• Connection Type: Round neck connection, 8-inch nominal duct collar
• Airflow Type: Supply air distribution
• Performance Characteristics:
  • Fixed blade design provides balanced air distribution across all discharge directions
  • Optimized outlet geometry ensures efficient air throw and low noise levels
  • Engineered for stable pressure performance in ducted supply systems
• Application:
  • Commercial and institutional HVAC systems
  • Ceiling-mounted air supply installations
  • Suitable for offices, educational, and healthcare environments
• Operating Environment: Indoor air distribution in conditioned spaces
• Material Finish Standard: Complies with SMACNA, ASHRAE, and AMCA performance standards
• Installation Requirements:
  • Fits standard 24 x 24-inch ceiling openings
  • Attach via duct collar or plenum box per design specifications
  • Ensure balanced system pressure for uniform discharge
• Maintenance: Fixed core construction with low maintenance; clean with non-abrasive materials
• Color: Bright white
• Compliance:
  • Meets ASHRAE 70 Air Distribution Test Standards
  • Manufactured under ISO 9001:2015 certified quality system
• Country of Manufacture: United States

Summary

The Hart & Cooley 050502 Fixed Pattern Diffuser (FPD08) is an 8-inch, 4-way steel ceiling diffuser with a 23-3/4 x 23-3/4-inch face and bright white enamel finish. Designed for 360° air diffusion and compatible with standard ceiling grids, it provides efficient, low-noise airflow for professional HVAC supply air distribution systems.