- Outside overall dimension is 15.75"wide and 8"high
- Duct opening - a hole that holds the duct neck to allow air to come out from HVAC system. This register fits in a duct opening of 14"wide and 6"high.
- Measure the size of the air duct opening(the size of the "hole" ) .
- Measure the duct opening
- Match the duct opening size with the listed size of 14"x 6".