Instructions for measuring Grille and Louver sizes:
For Grilles: 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
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