Vents come in many sizes and can vary throughout your home. Make sure to individually measure each supply vent using a method below.
Method 1 (Fastest)
Measure the outside dimensions and round down to the nearest even number (inch). This method isn't recommended in Canada.
Method 2 (Most Accurate)
Remove your vent and measure the duct opening.
Vents not within reach?
Use your phone to quickly get accurate vent sizes—even if they’re on the ceiling or high up on the wall.
Recommended Apps:
|
Measure (iPhone) |
AR Ruler App (Android) |