28"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 5.25"H] 4" Diameter + Product Details Size –

+ Product Details Size – 12"w X 30"h is the size for the duct opening measurement only

offering a shiny

Plastic Frame

+ Product Details Size - 36"w X 28"h is the size for the duct opening measurement only

28"W X 4"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 5.25"H] 4" Diameter + Product Details Size –+ Product Details Size 28"W X 4"H is (for duct opening measurement only); actual front end outer dimensions are 29. 25" Width X 5. 25" Height. Design Designed for concealed, flush placement on your wall with a 3 8 inch space between louvers, this linear grille comes with an installation frame and clips for easy hook in assembly, ensuring a refined and seamless look. High Quality Aluminum The premium durable aluminum will never rust and it will never