10"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 8" Round Duct Pipe this model allows for mounting

this model allows for mounting without removing the thermostat

+ Product Details Size - 28"w X 34"h X 2"d (for duct opening measurement only)

Actual Filter Size – 7 3/4"w x 25 3/4" x 1"

Actual Front End Outer Dimensions Are 42" Width X 18" Height - SEE IN DESCRIPTION HOW TO MEASURE A GRILLE

10"w X 6"h [Duct Opening] 1-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 11.75"W X 7.75"H] 8" Round Duct Pipe this model allows for mounting+ Product Details Size 10"w X 6"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 11. 75" width X 7. 75" height. High Quality High quality steel with counter sunk screw holes (screws included) and no sharp edges. Equipped with a lever for easy airflow adjustment and dampening. Airflow Control Adjustable airflow lever allows precise control over the direction and volume of air. Installation