10"W X 20"H [Duct Opening] ALUMINUM RETURN GRILLE - EASY AIR FLOW - LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 21.875"H] Floor Register / Modern Victorian See chart below: actual front end outer RFG1818 Black Welding & Soldering

See chart below:

+ Product Details Perfect Fit & Easy Sizing - Designed for a 26" x 30" OR 30" x 26" duct opening (measured at the opening)

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ceiling or ceiling tiles

+ Product Details Size - 26"w X 6"h is the size for the duct opening measurement only

10"W X 20"H [Duct Opening] ALUMINUM RETURN GRILLE EASY AIR FLOW LINEAR BAR GRILLES [OUTER DIMENSIONS: 11.875"W X 21.875"H] Floor Register Modern Victorian See chart below: actual front end outer RFG1818 Black Welding & Soldering See chart below: + Product Details Perfect Fit & Easy Sizing Designed for a 26" x 30" OR 30" x 26" duct opening (measured at the opening)