Return Air Filter Grille with Plenum Box - 24 x 24 T-Bar Lay-in Drop Ceiling Sheet Metal Powder-Coat Finish – Never rust

Powder-Coat Finish – Never rust

With its practical roll-formed lock construction on all four sides

+ Product Details Size – 20"w X 16"h is the size for the duct opening measurement only

When used together

Return Air Filter Grille with Plenum Box - 24 x 24 T-Bar Lay-in Drop Ceiling Sheet Metal Powder-Coat Finish – Never rustFor Lay In T Bar Ceiling High Quality Steel Construction Easy Unrestricted Air Flow For Your HVAC System 50 angled to provide maximum airflow 1 2" Spaced Stamped Louver Face Concealed Hinges and Latches to achieve a clean and modern look R6 Fiberglass Back Plenum accepts 6" to 18" Round Spin in Collars or Start Collars (not included) Accepts 1" disposable filter (not included) Recommended Size: 20x20x1 QUALITY PACKAGING & SATISFACTION GUARANTEED