WAC Lighting HR-3LED-R18D-A LED 3-Inch 20-watt Recessed Down Light Remodel Housing Go to amazon.com Related posts Top 10 3led light Feature4 5/8 inch cutoutAirtight and accommodates ceiling thickness from 1/2 - 1 inchMay be dimmed to 1% with electronic low voltage (ELV) dimmer DescriptionHR-3LED-R18D-A is a WAC Lighting Tesla - 3.5 inch LED Housing. Remodel, Non-IC, Airtight. For use with HR-3LED series trims.