30"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 17.875"H] 6" Diameter + Product Details Size –

+ Product Details Size – 20"w X 16"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 38 5/8" width X 14 5/8" height -

+ Product Details Size - 20"w X 28"h is the size for the duct opening measurement only

Built-In Locking System – Comes with a permanently attached eight-tumbler lock and a supplied key for added security

+ Product Details Perfect Fit & Easy Sizing - Designed for a 32" x 24" OR 24" x 32" duct opening (measured at the opening)

30"W X 16"H [Duct Opening] ALUMINUM RETURN GRILLE - Easy Air Flow - Linear Bar Grilles [Outer Dimensions: 31.875"W X 17.875"H] 6" Diameter + Product Details Size –+ Product Details Size 30"w X 16"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 31. 875" width X 17. 875" height. High Quality High quality aluminum with counter sunk screw holes (screws included) and no sharp edges. Design Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc. Powder Coat Finish Smooth, shiny, scratch resistant, beautiful. Looks like it was