Halo 4 in. White Integrated LED Recessed Ceiling Light Retrofit Trim at 3000K Soft White Low Glare Deep Baffle (6-Pack) RLD4069301EWHR-6PK - The Home Depot
MR16 Polished Chrome Fitting Fixture Lamp Holders Ceiling Spot Downlights White Pack of 2|lamp holder|ceiling holderspot lamp holder - AliExpress
EGLO Carpi 1-Light 15.15-in Aluminum Flush Mount Light in the Flush Mount Lighting department at Lowes.com