6" Round Ceiling Diffuser White Powder Coated with Outside Dimension of 10" Fitting in 6" Duct If your duct opening size

If your duct opening size is 6'' x 6”

75” wide by 9

Individually shrink wrapped with card board pad in the back for protection

Outside overall dimension is 16”wide and 10”high

6" Round Ceiling Diffuser White Powder Coated with Outside Dimension of 10" Fitting in 6" Duct If your duct opening sizeFirst thing to know about size selection: take the vent cover off the wall or ceiling. Measure the duct opening where the vent can fit in. Use the measurement to determine right size to buy. This product has listed size 6'' x 6'' is for duct opening measurement only, actual outsize overall dimensions is 10'' x 10. If your duct opening size is 6'' x 6, this is the right size and will fit in well. If you measure outside or surface size, you will get a