28"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 7.25"H] Insulated Flexible Ducts R-6.0 + Product Details Size –

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

Easy Installation – Quick and painless installation – Can be installed after line set is in place

Actual Filter Size – 23 3/4"w x 23 3/4" x 1"

The included eight-tumbler lock and supplied key provide secure access

Solid Base for Stability – Built with a solid base for reliable mounting and stability

28"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 29.25"W x 7.25"H] Insulated Flexible Ducts R-6.0 + Product Details Size –+ Product Details Size 28"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 29. 25" Width X 7. 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