Specifications 25 Goldwood Sound SG-M15 Black Metal Steel Mesh Snap On Grills Heavy Duty De-burred Steel Grills Fits Most 15 Woofers Each Comes with one Mounting Ring with 8 Hole Pattern and one Snap On Mesh Grill Mounting Hole Pattern of 14.625 from center to center across Overall Measurement of 15.625 Round and .75 High Requires Flat Head Screws that are NOT Included Designed And Engineered In USA Applications: Speaker Cabinet Home Speaker Car Speaker This Listing and Price is for 25 Grills