20"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 21.875"W X 15.875"H] w26h26 + Product Details Size – Sheet Metal RG2016 FBA-HP actual front end outer

+ Product Details Size – 25"w X 14"h is the size for the duct opening measurement only

4" X 10" Brass Victorian Floor Register Grille - Modern Contempo Decorative Grate - HVAC Vent Duct Cover - Brass Plated

+ Product Details Size - 34"w X 18"h X 2"d (for duct opening measurement only)

Drop Ceiling HVAC Supply Grille - For T-Bar Lay-In - 3 Coned - 24" x 24" - For 8" Vent Connection - Black

+ Product Details Perfect Fit & Easy Sizing - Designed for a 8" x 12" or 12" x 8" duct opening (measured at the opening)

20"W X 14"H [Duct Opening] ALUMINUM RETURN GRILLE Easy Air Flow Linear Bar Grilles [Outer Dimensions: 21.875"W X 15.875"H] w26h26 + Product Details Size – Sheet Metal RG2016 FBA HP actual front end outer + Product Details Size – 25"w X 14"h is the size for the duct opening measurement only 4" X 10" Brass Victorian Floor Register Grille Modern Contempo Decorative Grate HVAC Vent Duct Cover Brass Plated