Proper Size Floor Registers

How to measure floor registers and grilles.

Proper size floor registers.

Registers are the most common type of supply vent. Find large and over sized floor registers and floor return grilles in multiple styles and finishes. The duct vent size will depend on the size of the furnace and the size of your home so you know how many vents you need in each room. The overall size of the house the size of the room and the numbers of window in the room all play a part in determining the size of the overall air conditioning unit and the number of registers.

The furnace s british thermal units btus will help calculate the size it needs. Take out the existing floor register and measure the length width of the opening in inches all registers will be listed in inches. It is an industry standard to measure the actual hole opening in the floor to get the correct size of floor register or grille that you will need. The register shown above is a common aluminum adjustable curved blade one way 10 6 ceiling register.