36"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 7.875"H] Access Door actual front end outer dimensions SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe

actual front end outer dimensions are approximately 32 5/8" width X 18 5/8" height

+ Product Details Size – 24"w X 24"h is the drop ceiling HVAC supply grille size - for T-Bar lay-in

+ Product Details Size – 25"w X 36"h is the size for the duct opening measurement only

Minimum Efficiency Reporting Value (MERV) is a standard that rates the overall effectiveness of air filters

+ Product Details Perfect Fit & Easy Sizing - Designed for a 12" x 30" or 30" x 12" duct opening (measured at the opening)

36"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 31.875"W X 7.875"H] Access Door actual front end outer dimensions SV2414 HP Product Details Perfect Fit 12" Round Duct Pipe actual front end outer dimensions are approximately 32 5 8" width X 18 5 8" height + Product Details Size – 24"w X 24"h is the drop ceiling HVAC supply grille size for T Bar lay in