VEVOR 2 PCs 8 Inch in Ceiling Speakers, 50-Watts, Flush Mount Ceiling & in-Wall Speakers System with 8ΩImpedance 89dB Sensitivity, for Home Kitchen Living Room Bedroom or Covered Outdoor Porches

The product description states it requires a 8.1 inch diameter cutout, which is larger than a standard 6.5 inch cutout. However, it does not specify whether this size is compatible with other standard cutout sizes.

The product description states these speakers are suitable for covered outdoor porches. The rubber sealing strip and robust ABS housing avoid audio leakage and ensure longevity.

According to the product description, the speakers are easy to install and can be set up in 3-5 minutes without the need for complex tools or professional help.