25 Pack-White Light Trim Ring Recessed Can 6" Inch Over Size Oversized Lighting Fixture 25 Pack----White Finish Designed for a 6 inch recessed trim ring ceiling light fixture. Outside Diameter: Approximately 7 7/8" Inches or 20 Centimeters Inside Diameter: Approximately 5 7/8" Inches or 15 Centimeters. Please make sure to measure your existing light fixture. There are numerous manufactures of recessed light's an sizes may vary. Not UL listed