10" x 8" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) actual outsize overall dimensions is

actual outsize overall dimensions is 16“ wide by 10” high

The Listed size 6"x10" is for inside duct opening measurement

actual outsize overall dimensions is 10“ wide by 8” high

ONE 72-inch 304 stainless steel braided premium Faucet supply line connector with 1/2-inch FIP x 1/2- inch FIP nut connection

The Listed size 12"x 12"is for inside duct opening measurement

10" x 8" Adjustable Blade Sidewall Ceiling Register Vent Cover Diffuser Heavy Duty Stamped Steel (Listed Size is for Duct Opening or Inside Measurement) actual outsize overall dimensions isFirst 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 10w X 8h is for duct opening measurement only, actual outsize overall dimensions is 12 wide by 10 high. If your duct opening size is 10 x 8, this is the right size and will fit in well. If you measure outside or surface size, you will