Old How to Measure

1. Remove existing grille(s) 

2. Measure the hole  

Tip: Do NOT measure the old grille. Every grille has a different size of outside frame so we cannot use the old/existing grille as a guide Tip: For custom sizes, please send us the exact dimensions of the hole. This helps us determine which size works best. (do not undersize the dimensions)

3. Choose your grille size:

Hole Opening Dimensions Stack Dimensions Overall Frame Dimensions
10" x 3" 9 3/4" x 2 3/4" 11 3/4" x 4 3/4"
10" x 4" 9 3/4" x 3 3/4" 11 3/4" x 5 3/4"
12" x 2.5" 11 3/4" x 2 1/4" 13 3/4" x 4 1/4"
12" x 4" 11 3/4" x 3 3/4" 13 3/4" x 5 3/4"
14" x 2.5" 13 3/4" x 2 1/4" 15 3/4" x 4 1/4"
14" x 4" 13 3/4" x 3 3/4" 15 3/4" x 5 3/4"
10" x 6" 9 3/4" x 5 3/4" 11 3/4" x 7 3/4"
12" x 6" 11 3/4" x 5 3/4" 13 3/4" x 7 3/4"
14" x 6" 13 3/4" x 5 3/4" 15 3/4" x 7 3/4"
14" x 8" 13 3/4" x 7 3/4" 15 3/4" x 9 3/4"


Example: for a 10" x 4" opening, your grille dimensions will be as shown below;

  • kul grilles internal dimensions are undersized by 1/4" for clearance.
  • Don't see your size? kul grilles can manufacture custom sizes. Click here to submit a quote request.
  • Still not sure what size to order? Click here to email kul grilles with your hole dimensions.