Measure to determine your Opening Size: C = Top to Bottom (Opening Width) and D = Left to Right (Opening Length). Determine your Border Size: E = Left to Right Border and F = Top to Bottom Border and specify Overall Grille Size: A = Grille Top to Bottom (Grille Width) and B = Grille Left to Right (Grille Length). It is recommended to specify a large enough border to completely cover your rough opening. Watch our "How To Measure a Perforated Grille" video above to get more specific instructions. Our fabrication specialists can assist you in determining the perfect fit for your project.
Measurements should match the width and length of your desired finished piece. It is recommended to allow for clearance when using stiffeners. NOTE: Grilles are manufactured to the size given, and WILL NOT be automatically undersized.
NOTE: Screw Holes are only provided if requesting mountings #601, #602 or #605. Holes are placed .375” off edge of hole center UNLESS specified. Notify you estimator of specific screw hole layout requirements.
Download Perforated Grilles Measurement Guidelines PDF
For additional installation information please contact a sales person at 800-387-6267.