14" X 24" Or 24" X 14" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 15.75 X 25.75] steel This 30" X 8" end FG1836 HP-1 Product Details Size 20 ceiling

This 30" X 8" end cap is constructed with 26-gauge galvanized steel

actual front end outer dimensions are 17

6" X 14" Is The Size For The Duct Opening Measurement Only

+ Product Details Size - 4"w X 26"h is the size for the duct opening measurement only

all the way around the square portion which can be used for attachment or folded over

14" X 24" Or 24" X 14" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 15.75 X 25.75] steel This 30" X 8" end FG1836 HP 1 Product Details Size 20 ceiling This 30" X 8" end cap is constructed with 26 gauge galvanized steel actual front end outer dimensions are 17