12" x 3" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 14w X 5"h] Copper Coil 9% Pure Copper meeting ASTM

9% Pure Copper meeting ASTM B280 standards

+ Product Details Size - 30"w X 2"h is the size for the duct opening measurement only

Example: If your hole is 20" wide by 14" tall

Actual Filter Size – 15 3/4"w x 7 3/4" x 1"

+ Product Details Size – 4"w X 8"h is the size for the duct opening measurement only

12" x 3" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 14w X 5"h] Copper Coil 9% Pure Copper meeting ASTM12"w X 3"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 14" Width X 5" Height SEE IN DESCRIPTION HOW TO MEASURE A GRILLE Slim Sliding Metal Damper To Control and Adjust Airflow Slots Are Angled to Diversify The Airflow In 2 Way Direction Great for Wall and Floor & ceiling Applications Roundover Beveled Edges Polished Pre Finish Gloss Varnish Ready To Install Can Also Be Sanded And Re finished According To