10" X 30" or 30" X 10" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 11.75 X 31.75] Insulated Line Set Actual Filter Size – 31 w6h6 actual front end outer MFFG410-1

Actual Filter Size – 31 3/4"w x 17 3/4" x 1"

+ Product Details Perfect Fit & Easy Sizing - Designed for a 14" x 16" OR 16" X 14" duct opening (measured at the opening)

+ Product Details Size – 8"w X 14"h is the size for the duct opening measurement only

+ Product Details Size - 30"w X 14"h is the size for the duct opening measurement only

10" X 30" or 30" X 10" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 11.75 X 31.75] Insulated Line Set Actual Filter Size – 31 w6h6 actual front end outer MFFG410 1 Actual Filter Size – 31 3 4"w x 17 3 4" x 1" + Product Details Perfect Fit & Easy Sizing Designed for a 14" x 16" OR 16" X 14" duct opening (measured at the opening)