14"W X 12"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 15.75"W X 13.75"H] Round Damper Ring very easy to do

very easy to do

providing maximum flexibility

Actual Filter Size – 13 3/4"w x 27 3/4" x 1"

or just adding updated elements to your current home

Actual Filter Size – 33 3/4"w x 31 3/4" x 1"

14"W X 12"H [Duct Opening] 3-Way Aluminum Curved Blade Adjustable Air Supply HVAC Diffuser [Outer Dimensions: 15.75"W X 13.75"H] Round Damper Ring very easy to do+ Product Details Size 14"w X 12"h is the size for the duct opening measurement only, actual front end outer dimensions are 15. 75" width X 13. 75" height. Design Individually adjusting curved blades. Multi shutter damper with handle operator to adjust air flow. Screws Included High Quality Aluminum The premium durable aluminum will never rust and it will never wear through leaving the material with an elegant, beautiful, and smooth surface, adds a