Get your fingernails or a thin screwdriver between the rim and the ceiling and pull down. Those silver nubs are probably parts of the springs that hold the fixture in place. Pushing on them might help but usually just pulling down works.
The silver tabs are just to hold the decorative trim ring. I have tried pulling down but don't want to bend anything in case the whole fixture is nailed to the studs or something. There are tabs around the bulb socket that when squeezed will push the socket up but again, I don't want to disconnect in case I can't put it back together. This is in a basement so I can't access the lights from the top.
The trim should pull down and the socket will come with it. It is possible that the trim is "glued" to the ceiling by the paint. It might also help to twist the ring while pulling down.
FYI - Code requires the trim to be removable on all can fixtures so that the junction box can be removed.
This is indeed a Lightolier and I was able to just pull the whole thing down with some force. There are no screws and the whole thing uses just friction tabs against the mounting trim. Thanks guys!
Can anyone tell me where I can purchase replacement units for either of these two outdoor wall units? Thanks.
[img]https://cimg0.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x1504/20211202_115301_393924b284ffd41105cc19c78e9ba21e473e5cc2.jpg[/img]
[img]https://cimg3.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1484x1260/screen_shot_2021_12_02_at_12_17_36_pm_613f9dcaff648204ca13534cdd4b7d75c0773d5d.png[/img]
Also need help identifying fan make and model
[img]https://cimg1.ibsrv.net/gimg/www.doityourselft.com-vbulletin/2000x971/20211204_144617_369d115876230bf668f24a79703f1d06f917157b.jpg[/img]