14" x 14" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 2-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 17" x 17"] 9" Diameter We also made sure that

We also made sure that each filter in every pack lasts you a long time

+ Product Details Size - 12"w X 22"h X 2"d (for duct opening measurement only)

75" width X 15

+ Product Details 16" x 16" x 1" replacement air filters for your furnace

75"H – fits a 8" X 4" duct opening

14" x 14" [Duct Opening] Ceiling Supply Diffuser Vent Cover – 2-Way Airflow with Full Aluminum Frame, Back Blades & Opposing Blade Lever Damper [Outer Size: 17" x 17"] 9" Diameter We also made sure that+ Product Details Size Refers to duct opening only. The face frame extends roughly 1. 5" on each side. Do not measure the overall grille for sizing. Design All aluminum frame and back blades. Rustproof and built to last in moisture prone environments. Quiet Airflow Opposing blade damper design reduces vibration and noise for smoother air distribution. Clean Finish White powder coated surface resists chips, scratches, and discoloration over time. Easy