6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Grille Adjustable Return Copper coil line set fits

Copper coil line set fits most ductless mini split air conditioners

High Quality Copper Coil Meets/Beats ASTM B280 Standard for Air Conditioning and Refrigeration (Made From C12200 - 99

Looks like it was just waxed

If you are looking to enhance your project with a top-of-the-line unit

listed size +2"

6" x 24" or 24" x 6" Cube Core Eggcrate Return Air Grille Adjustable Return Copper coil line set fits+ Product Details Size 6" x 24" or 24" x 6" is the size for the duct opening measurement only, actual front end outer dimensions are approximately 8. 5" X 26. 5". High Quality High quality, rust free aluminum construction with smooth finished edges and counter sunk screw holes (screws included); no sharp edges.. Installation Location sidewall and ceiling. Design Cubic core eggcrate design Offers highest airflow efficiency at almost 95%, reducing