The Hart & Cooley 043405 Return Air Filter Grille is a 14 x 20-inch steel grille designed for use in professional HVAC return air systems. As part of the 659 Series, this grille incorporates a 20° fixed blade deflection and 1/3-inch blade spacing to provide uniform airflow and low static pressure drop. The hinged face design allows easy access for filter maintenance, while the durable steel frame and bright white baked enamel finish ensure long-term performance in both residential and commercial environments.
Technical Specifications
Manufacturer: Hart & Cooley
Model Number: 043405
Series: 659
Description: Return Air Filter Grille – Fixed Blade Type
Reference Number: 129812
Nominal Size: 14 in x 20 in (356 mm x 508 mm)
Duct Opening Size: 19-15/16 in Height (506 mm)
Overall Length: 16-5/8 in (422 mm)
Deflection Angle: 20° fixed blade configuration
Blade Spacing: 1/3 in (8.5 mm)
Blade Orientation: Horizontal fixed blades for return air applications
Material: Formed heavy-gauge steel
Finish: Bright white baked enamel coating
Color: Bright white
Mounting Type: Surface-mounted, suitable for wall or ceiling installation
Filter Compatibility: Designed to accommodate standard 1-inch nominal filters (not included)
Access Mechanism: Hinged face panel with spring or screw latch for filter service
Airflow Function: Return air filtration and intake
Performance Characteristics:
20° fixed deflection provides balanced airflow and return efficiency
1/3-inch blade spacing maximizes free area and minimizes pressure loss
Rigid frame construction reduces vibration and operational noise
Applications:
Residential and commercial HVAC systems
Ceiling or sidewall return air installations
Filtered air intake for mechanical systems
Installation Requirements:
Mount directly to return air duct opening using standard fasteners
Confirm hinge clearance for proper filter access
Ensure frame alignment with duct flange for airtight fit
Operating Environment: Indoor, conditioned air return applications
Compliance and Standards:
Meets SMACNA and ASHRAE air distribution performance standards
Complies with ANSI/NFPA 90A for air duct systems
Manufactured under ISO 9001:2015 quality management certification
Maintenance: Clean grille face and replace filters per system service interval
Service Life: Designed for long-term continuous use under standard HVAC operation
Country of Manufacture: United States
Summary
The Hart & Cooley 043405 Return Air Filter Grille (659 Series) is a 14 x 20-inch steel unit with 20° fixed blades and 1/3-inch spacing for uniform return airflow. Featuring a hinged access face for filter maintenance and a bright white baked enamel finish, it delivers dependable, code-compliant performance in professional HVAC return air installations.