Hart Cooley 11748 Return Air Grille 20x20 Fixed Blade 94A

Product Description

The HART COOLEY 11748 is a fixed-blade return air grille designed for residential and light commercial HVAC duct systems. Built from steel with a bright white finish, this Series 94A grille fits a 20 x 20 inch duct opening and delivers an effective area of 1.9 square feet. The fixed blades are set at a 35-degree deflection angle with 0.75-inch blade spacing, supporting a flow rate range of 571 to 1902 CFM. HVAC technicians and sheet metal installers use this grille as a drop-in return air termination on forced-air systems where a clean, surface-flush appearance is required.

The 11748 is suited for wall or ceiling return air applications in forced-air heating and cooling systems. The duct opening dimensions are 19.25 inches wide by 19.25 inches tall. The overall face width is 21.75 inches and the overall depth is 1 inch, making it a low-profile option for tight wall cavities or shallow ceiling returns. The bright white powder finish blends with standard interior trim in residential construction and light commercial tenant improvements.

Key Features

• Fixed-blade grate at 35-degree deflection angle for consistent return airflow direction
• Flow rate range of 571 to 1902 CFM to suit varying system capacities
• 1.9 square feet of effective open area for low-restriction return air performance
• Steel construction with bright white finish for durability and clean appearance
• 0.75-inch blade spacing provides structural rigidity while maintaining airflow
• Domestic manufacture — Series 94A

Compatibility

Designed as an OEM-style replacement or new-installation return air grille for residential and light commercial forced-air duct systems with a 20 x 20 inch return opening.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal contractors. Shut down the air handling unit and confirm the system is de-energized before cutting or modifying the duct opening. Verify the rough opening matches the 19.25 x 19.25 inch duct dimensions before mounting. Secure the grille to the wall or ceiling substrate per local mechanical code requirements, and confirm the blade deflection direction suits the return airflow path of the installed system.

Technical Specifications

• Series: 94A
• Size: 20 x 20 inches
• Duct Width: 19.25 inches
• Duct Height: 19.25 inches
• Overall Width: 21.75 inches
• Overall Depth: 1 inch
• Flow Rate: 571 to 1902 CFM
• Effective Area: 1.9 sq ft
• Deflection Angle: 35 degrees
• Blade Spacing: 0.75 inches
• Grate Type: Fixed Blade
• Material: Steel
• Finish: Bright White
• Country of Origin: Domestic

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 11748