10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 12w X 6"h] Compatible With Duct 6in actual front end outer dimensions

actual front end outer dimensions are approximately 34 5/8" width X 34 5/8" height

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

+ Product Details Size - 14"w X 30"h is the size for the duct opening measurement only

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

10" x 4" Decorative Wood Supply Air Vent HVAC Duct Cover Grille - Polished Finish Red Oak Wood - 2-Way Air Direction - [Outer Dimensions: 12w X 6"h] Compatible With Duct 6in actual front end outer dimensions10"w X 4"h Is The Size For The Duct Opening Measurement Only, Actual Front End Outer Dimensions Are 12" Width X 6" 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