Aluminum Return Air Grille 20 by 16 Inches With Outer Frame 21.875 by 17.875 Inches, Linear Bar Design, Unrestricted Airflow, Counter Sunk Screw Holes, Screws Included, No Sharp Edges, Easy Install for Duct Openings, Durable Residential HVAC Vent

Aluminum Return Air Grille with Outer Frame, Single Unit
✔️ 20x16 in opening; outer frame 21.875x17.875 in; screws included

This aluminum return air grille is designed to cover duct openings and provide unrestricted airflow in residential HVAC systems. Ideal for sidewalls or ceilings, it combines a durable frame with a smooth powder-coated finish for a clean, maintenance-free look.

Duct opening	20"W x 16"H (508 mm x 406 mm)
Outer frame	21.875"W x 17.875"H (556 mm x 454 mm)

✅ Material: high-quality aluminum
✅ Duct opening size: 20"W x 16"H; outer frame 21.875"W x 17.875"H (508 mm x 406 mm; 556 mm x 454 mm)
✅ Counter-sunk screw holes; screws included
✅ Unrestricted airflow; no sharp edges; noise-free operation
✅ Powder-coated finish; scratch-resistant and durable
✅ Installation: suitable for sidewall or ceiling duct openings

💡 What is a durable aluminum return air grille used for in a residential HVAC system?

Handy for keeping duct openings clean while ensuring steady airflow and easy setup.

- airflow management for return paths - quick and easy installation with counter-sunk screws - durable aluminum construction with powder-coated finish - safe, smooth edges for everyday use