12"w X 6"h [Duct Opening] 3-Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] w18h18 Design – Unrestricted airflow For Compatible with Duct 4" Product Details Size 32 LO246

Design – Unrestricted airflow For Your HVAC system - noise free components - no vibrating louvers etc

All steel wire is applied between PET surfaces to prevent corrosion (oxidization)

+ Product Details Size - 8"w X 8"h is the size for the duct opening measurement only

Actual Filter Size – 19 3/4"w x 21 3/4" x 1"

+ Why HVAC Premium HVAC Premium has been providing superior quality service for many years

12"w X 6"h [Duct Opening] 3 Way Fixed Curved Blade Air Supply Diffuser Register Vent Cover Grille [Outer Dimensions: 13.75"W X 7.75"H] w18h18 Design – Unrestricted airflow For Compatible with Duct 4" Product Details Size 32 LO246 Design – Unrestricted airflow For Your HVAC system noise free components no vibrating louvers etc All steel wire is applied between PET surfaces to prevent corrosion (oxidization)