8" X 16" or 16" x 8" Heavy Duty Floor Grille - Fixed Blades Air Grille - Brown [Outer Dimensions: 9.75 X 17.75] Height_22in 4" X 14" Is The FLTR M8 308x3 Actual Filter Size 23 Drop Ceilings / Aluminum

4" X 14" Is The Size For The Duct Opening Measurement Only

and we recommend a rearward tilt for your mini split unit to ensure maximum security

Actual Filter Size – 21 3/4"w x 29 3/4" x 1"

actual front end outer dimensions are approximately 10 5/8" width X 22 5/8" height

Protection – Provides the ultimate defense against any kind of weather

8" X 16" or 16" x 8" Heavy Duty Floor Grille Fixed Blades Air Grille Brown [Outer Dimensions: 9.75 X 17.75] Height_22in 4" X 14" Is The FLTR M8 308x3 Actual Filter Size 23 Drop Ceilings Aluminum 4" X 14" Is The Size For The Duct Opening Measurement Only and we recommend a rearward tilt for your mini split unit to ensure maximum security