24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 12" Collar 12in diameter + Product Details Size –

+ Product Details Size – 8"w X 14"h is the size for the duct opening measurement only

Actual Filter Size – 29 3/4"w x 5 3/4" x 1"

And The Cooler Air From Outside WIll Flow In From The Bottom

this model ensures top-notch air quality

+ Product Details Size - The listed 6" diameter refers specifically to the size of the duct opening

24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 12" Collar 12in diameter + Product Details Size –+ Product Details Size 24" x 24" with 12" collar T Bar drop ceiling perforated return grill metal back casing High Quality High quality rust free, strong aluminum construction with smooth finished edges for easy and safe use; Filter grille features a user friendly plastic latch that requires no screwdriver for opening. Installation Easy drop ceiling installation. Design Heavier gauge than needed, built for durability and long life in mind, but still