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;

  • kul grilles stack 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.

Wall and Ceiling Applications

Select "Yes" from the "Include Mounting Holes" dropdown menu.

Fastening type: Countersunk screwholes  

Mounting hole dimensions  

Countersunk screwholes are visible from the face of the grille and are required when mounting for sidewall and ceiling applications Matching finish, flush mount screws provided with each order

Screws required for different grille sizes:

 Number of Screws:

Screw Placement: