# How are ceiling air vents measured?

## How are ceiling air vents measured?

Pull the vent forward and out of the opening. Measure the size of the air duct opening. Do not measure the old register or vent. Note the measurements as width and length as that is how they are packed and labeled.

### Are floor and ceiling registers the same?

The metal grille on floor registers is a bit thicker, to withstand foot traffic. Also, the wall/ceiling grates have pre-drilled holes that are “countersunk,” so the screw heads are flush to the register’s surface. The difference between Decor Grates floor and wall and their floor registers is minimal.

How do I calculate the size of a cold air return?

Calculate the square root of the total. (Example: 4 (ton unit) x 144 square inches = 576 squared. The square root of 576 is 24. Therefore, your return air duct and grill size will be 24 by 24 inches.)

Where can I find floor registers?

Registers should be placed in the middle of the external wall (in the floor or low on the wall); if there are two external walls, both need registers in the middle. (If the room is tiny, one duct may work, even if there are two external walls.)

## Are vent registers necessary?

While it is a myth that air return grilles are required in each and every room in the house, it is definitely necessary to have more than one of these grilles installed at strategic places in the house. Likewise, you can also install these in rooms that have a high footfall or usage in the house.

### How to measure for replacement registers and grilles?

How to Measure for Replacement Registers and Grilles? 1 Note if the register or grille you are replacing is for a wall, ceiling or floor. 2 Remove screws holding the vent in place. If the vent is held in place by its own weight or tension, pull the vent forward and out of the opening. 3 Measure the size of the air duct opening.

What’s the difference between floor and ceiling registers?

This means that floor registers will often have a smaller number first, like 4×10 or 4×12. Ceiling and some sidewall registers will usually just be described as long side first, such as a 10×6 or 12×8, but that can vary from brand to brand.

How big should a ceiling and sidewall be?

Ceiling and some sidewall registers will usually just be described as long side first, such as a 10×6 or 12×8, but that can vary from brand to brand. Yes, it is pretty simple, but it’s also essential for clear communication.