24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 10 "Collar Color_Black diagonally feed it through the

diagonally feed it through the square hole

Design – Heavier gauge than needed

+ Product Details Size – 40"w X 10"h is the size for the duct opening measurement only

providing efficient performance of up to 300m3/h

ensuring it fits most standard thermostat models

24" x 24" T-Bar Drop Ceiling Perforated Return Grill - Metal Back Casing - With 10 "Collar Color_Black diagonally feed it through the+ Product Details Size 24" x 24" with 10" 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