24"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 25.25"W x 7.25"H] Compatible with Duct 6" The back is completely insulated

The back is completely insulated

actual front end outer dimensions are approximately 20 5/8" width X 22 5/8" height -

12" x 6" Decorative Wood Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction

+ Product Details Size – 30" x 36" or 36" x 30" is the size for the duct opening measurement only

Design – This round ends no crimp boot duct fitting is designed for transitioning oval wall stack ducting to round sheet metal pipe

24"W X 6"H [Duct Opening] Linear Aluminum Clip-On Bar Return Air Grille [Outer Dimensions: 25.25"W x 7.25"H] Compatible with Duct 6" The back is completely insulated+ Product Details Size 24"W X 6"H is (for duct opening measurement only); actual front end outer dimensions are 25. 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