24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 8" Collar 6in diameter + Product Details Size –

+ Product Details Size – 18"w X 18"h is the size for the duct opening measurement only

actual front end outer dimensions are approximately 22 5/8" width X 27 5/8" height

Actual Filter Size – 17 3/4"w x 11 3/4" x 1"

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Actual Filter Size – 11 3/4"w x 9 3/4" x 1"

24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 8" Collar 6in diameter + Product Details Size –+ Product Details Size 24" x 24" with 8" 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