Return Air Filter Grille with Plenum Box - 24 x 24 T-Bar Lay-in Drop Ceiling 18in diameter The total outer size of

The total outer size of this grille is the listed size plus plus 2 and 5/8"

+ Product Details Size - 22"w X 34"h X 2"d (for duct opening measurement only)

+ Product Details Size – 10"w X 20"h is the size for the duct opening measurement only

+ Product Details Size - 28"w X 24"h is the size for the duct opening measurement only

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Return Air Filter Grille with Plenum Box - 24 x 24 T-Bar Lay-in Drop Ceiling 18in diameter The total outer size ofFor 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