How To Measure Floor Vent Size

However the overall size of the opening must be considered.

How to measure floor vent size.

If your duct work opening in the floor is 4 x 10 you ll need to purchase a 4 10 floor register. This means that floor registers will often be smaller number first like 4 10 or 4 12. For sizing please use the duct size and reference the overall frame size for installation. You could also use a 4 x10 floor register if your hole measured 4 1 4 x 10 1 2.

The width and length of your opening should match the duct opening sizes. Length in inches by height in inches this is your duct opening size. Most vent faceplates are large enough to support the register and cover the entire hole. For floor registers they follow the same rules as return grilles where you state the dimension parallel to the louvers first.

Note if the register or grille you are replacing is for a wall ceiling or floor. Measure the duct opening in your floor wall or ceiling. Remove screws holding the vent in place. To measure your register properly remove the existing register from the floor wall or ceiling in which it is installed.

Many of our vent grilles include directional patterns so it is crucial to provide both dimensions in their respective order. Then measure the length and width of the air duct opening. Pull the vent forward and out of the opening. Remove the screws that hold the vent in place.

A register is measured by the size of its louvers which is the bottom of the register that fits into the ventilation duct. Take out the existing floor register and measure the length width of the opening in inches all registers will be listed in inches. Measure the opening in your floor wall or ceiling. For example a 4 x 10 flush mount wood register has an overall size of 6 x 12.

How to measure and replace a floor register. Locate the register or grille you are replacing and note if it is for a wall ceiling or floor. The flush mount no frame is also ordered by measuring the duct size.