SG1828-6R Formed Metal Grill Pair

6 mm round hole, 18" x 28" x 1" grill. Dayton Professional formed metal grills protect your speakers with the same style and strength as the grills on expensive pro PA cabinets. The black powder coated 1.2 mm steel is punched in your choice of three hole patterns: 6 mm round (6R), 8 mm round (8R), and 8 mm square (8S). Each hole pattern is available in four finished grill sizes: 12" x 18", 15" x 22", 18" x 28", and 22" x 30". A carefully formed 1" bend on each edge provides extra strength to the grill, as well as creating a convenient mounting "stand off" for many installations. Additionally, each hole pattern is available in a 22" x 30" utility "flat" version (no bends), which can be used as is or custom cut by the user. Available in sizes to fit most 8", 10", 12", 15", and 18" speakers. Note: due to variations in the metal forming process, published dimensions are nominal and should be considered "approximate". Actual grill size could vary from stated dimensions by up to 1/2". Suggested applications: 10" 2-way with horn: 12" x 18" grill 12" 2-way with horn: 15" x 22" grill 15" 2-way with horn: 18" x 28" grill 15" 3-way with cone mid and horn: 22" x 30" grill 18" single driver subwoofer: 22" x 30" grill 2 x 12" guitar cabinet: 18" x 28" grill