3.16 x 3.16 x 1 inches

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【Recessed Mount Design】Diameter(Inch): 3-3/16”; Cut (Inch): 2-1/16”; Depth (Inch): 1”. Please check the diameter and mounting hole before order. Recessed Mount Designed Provide Easy and Safe installation, you can Install with Two Springs or Screw Holes (3 Screws Included). Manufacturer Part Number: DLFST3-008, We Have Got the Design Patents and Related Quality Certificates
【Full Aluminum Housing】Aluminum Housing with Good Heat Diffusing and Anti-corrosion. Extending the Lifespan of these RV Interior Lighting to 50000+ Hours. More Durable and Delicate than the Traditional Plastic RV Dome Light Fixture