20" x 20" T-Bar Return Air Filter Grille, Insulated, White

050560 Hart & Cooley 659TI Insulated T-Bar Return Air Filter Grille – 20x20

The Hart & Cooley 050560 Insulated T-Bar Return Air Filter Grille (Series 659TI) is a professional-grade ceiling return assembly designed for installation in T-bar grid systems. Engineered for HVAC return air applications requiring filtration and thermal insulation, this grille provides durable performance and a clean architectural appearance. Its hinged face design allows easy filter access, while the insulated back panel minimizes condensation and thermal loss in plenum installations.

Technical Specifications

• Manufacturer: Hart & Cooley
• Model Number: 050560
• Series: 659TI
• Product Type: Insulated T-Bar Return Air Filter Grille
• Nominal Size: 20 in. x 20 in.
• Overall Dimensions: 23-3/4 in. (L) x 23-3/4 in. (W) x 4-1/4 in. (D)
• Face Type: Lanced Blade Return Grille
• Blade Spacing: 1/3 inch (8.5 mm)
• Material: Steel construction with insulation backing
• Finish: Bright White baked enamel
• Mounting Type: Lay-in for standard 24 x 24 T-bar grid ceiling systems
• Filter Access: Hinged face panel with thumb latch closure for quick service
• Filter Size Compatibility: Accepts standard 1-inch filters (field supplied)
• Insulation Type: Factory-installed thermal insulation on rear panel
• Airflow Application: Return air plenum and HVAC system filtration
• Maximum Operating Temperature: 140°F (60°C)
• Compliance: Meets SMACNA and ASHRAE air distribution standards

Professional Notes

The Hart & Cooley 659TI series insulated filter grille is designed for professional HVAC contractors installing return air systems in suspended ceiling environments. The insulated back panel prevents condensation above conditioned spaces, while the hinged face allows straightforward access for filter replacement. The grille’s steel construction provides strength and rigidity suitable for commercial and institutional use. Proper alignment within the T-bar grid and sealing around the perimeter are recommended to maintain air handling efficiency and code compliance.

Summary

The Hart & Cooley 050560 (659TI Series) 20x20 Insulated T-Bar Return Air Filter Grille features a lanced blade design, hinged access face, and thermal insulation for efficient plenum return installations. Constructed of steel with a bright white finish, it delivers durable, code-compliant performance for professional HVAC applications.