38"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 39.875"W X 15.875"H] 18" Round Duct Pipe + Product Details Perfect Fit Compatible with Duct 4" Product Details Size 32 LO246

+ Product Details Perfect Fit & Easy Sizing - Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening)

and we’ve help numerous contractors

GPH for highest: - 1

Produced in accordance with ISO 9001-2008 Quality Management System

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38"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 39.875"W X 15.875"H] 18" Round Duct Pipe + Product Details Perfect Fit Compatible with Duct 4" Product Details Size 32 LO246 + Product Details Perfect Fit & Easy Sizing Designed for a 24" x 12" OR 12" x 24" duct opening (measured at the opening) and we’ve help numerous contractors