1.) Measure the Wall Opening (Width" x Height")
2.) Match the wall opening size to the correct part number on the Wood Vent Grille pricing page.
.....example: 10" Wide x 6" High = part no. #1006
For Louvers:
1.) Measure the Wall Opening (Width" x Height")
2.) Match the wall opening size to the correct part number on the Air Damper Louver pricing page.
.....example: 10" Wide x 6" High = part no. #LVR-1006