Hart Cooley 043378 Return Air Grille 30x18 White Steel

Product Description

The HART COOLEY 043378 is a steel return air grille designed for residential and light commercial HVAC duct systems. Constructed from steel with a bright white enameled finish, it provides a clean, wall- or ceiling-flush appearance in return air applications. The grille features a 40-degree fin angle and 1/2-inch fin spacing, a combination that delivers exceptional free area for low-restriction airflow back to the air handler or furnace. Overall installed face dimensions are 31-3/4 inches wide by 19-3/4 inches tall, covering a 30-inch by 18-inch duct opening. HVAC technicians and installers specify this grille where maximizing return air volume with minimal pressure drop is a priority.

This grille is suited for return air duct openings in residential homes and light commercial buildings. It installs in standard wall, floor, or ceiling applications where a 30-inch by 18-inch rough opening is present. The bright white enamel finish blends with common drywall and trim colors, making it a practical choice for occupied spaces. The 5/16-inch margin turnback overlaps the duct opening edge for a finished, tight appearance without additional trim work.

Key Features

• 40-degree fin angle with 1/2-inch fin spacing for high free area and low restriction
• Bright white enameled steel finish resists corrosion and cleans easily
• 5/16-inch margin turnback overlaps duct opening for a finished installation
• Fits a 30-inch by 18-inch duct opening with an overall face size of 31-3/4 inches by 19-3/4 inches
• Return air duty — no damper, optimized for unrestricted airflow

Compatibility

Designed as an OEM-style replacement or new-installation return air grille for residential and light commercial HVAC duct systems with a 30-inch by 18-inch return air opening.

Installation Notes

Installation is typically performed by an HVAC technician or sheet metal installer. Power down the air handling unit or furnace before working on the duct opening. The grille mounts directly over the duct opening using the margin turnback to overlap the finished surface; secure with appropriate fasteners for the wall or ceiling material. Do not use this grille as a supply diffuser — it is rated for return air service only.

Technical Specifications

• Type: Return Air Grille
• Grille Size: 30 inches wide x 18 inches tall
• Overall Dimensions: 31-3/4 inches wide x 19-3/4 inches tall x 5/16 inches deep
• Fin Angle: 40 degrees
• Fin Spacing: 1/2 inch
• Margin Turnback: 5/16 inch
• Material: Steel
• Finish: Bright White Enameled

Standard Information

• Brand: HART COOLEY
• Manufacturer Part Number: 043378