New construction brackets are not required when you purchase OSD Audio speakers as all models feature dog-eared clamps that secure speakers to the ceiling. However, new construction brackets do provide additional support and allow you to determine the exact placement of the speaker while providing a template to cut the mounting hole. Cut-Out Hole Diameter: 9.5"
WARNING: This product can expose you to chemicals including Bisphenol A (BPA) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov