8" X 4" Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - Black 14" Diameter How To Measure A Floor Height_16in RG1612AL Product Details Size 14

How To Measure A Floor Register

Design – Fixed hinged for easy filter change & cleaning - uses a 1" thick filter

Ideal for Walls & Ceilings: Designed for seamless installation in standard 12" X 10" duct openings

+ Product Details Size - 24"w X 24"h X 2"d (for duct opening measurement only)

+ Product Details Perfect Fit & Easy Sizing - Designed for a 20" x 8" OR 8" x 20" duct opening (measured at the opening)

8" X 4" Adjustable AIR Supply Diffuser HVAC Vent Cover Sidewall or Ceiling Grille Register High Airflow Black 14" Diameter How To Measure A Floor Height_16in RG1612AL Product Details Size 14 How To Measure A Floor Register Design – Fixed hinged for easy filter change & cleaning uses a 1" thick filter