10"x 4" (Duct Opening Size) 1-Way Stamped Face Steel Ceiling/sidewall Air Supply Register - Vent Cover - Actual Outside Dimension 11.75" X 5.75"First 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 4h is for duct opening measurement only, actual outsize overall dimensions is 11. 75 wide by 5. 75 high. If your duct opening size is 10 x 4, this is the right size and will fit in well. If you measure outside or surface size,

• Quick Disconnect Fitting for fast and convenient connection

actual outsize overall dimensions is 12''X12''

Working pressure 0-350PSIG

BURST PROOF - Designed to last

SMART DESIGN: Adjustable length of 10"-14" to fit in multiple vent sizes

Two installation screws included

Witness the seamless fusion of durability and style as our floor registers introduce a robust presence and enduring elegance to your living space

OD is 1/4" ID is 1/6" in Black

Distance between the centers of two screws is 7"

Outside overall dimension is 16”wide and 10”high

If your duct opening size is 6” x 6”

If your duct opening size is 10” x 10”