# Flush Ceiling fixture
**URL:** https://boards.straightdope.com/t/flush-ceiling-fixture/830134
**Category:** Factual Questions
**Created:** [February 24, 2019, 9:39pm UTC](https://boards.straightdope.com/t/flush-ceiling-fixture/830134 "2019-02-24T21:39:24Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@dauerbach](https://boards.straightdope.com/u/dauerbach)
#### Post date: [February 24, 2019, 9:39pm UTC](https://boards.straightdope.com/t/flush-ceiling-fixture/830134/1 "2019-02-24T21:39:24Z")
While replacing some bulbs in a 12 inch flush mount ceiling fixture I did not remount the globe correctly and now would rather find replacement glass than replacing the whole thing. It has a really stupid mounting system where two flat pieces of metal along the diameter of the fixture is supposed to mate with slots in the glass. Then you just twist. I do not know what this is called, but figure it must be at least slightly standard. How do I go about finding replacement glass?
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### Author:  [@beowulff](https://boards.straightdope.com/u/beowulff)
#### Post date: [February 24, 2019, 10:12pm UTC](https://boards.straightdope.com/t/flush-ceiling-fixture/830134/2 "2019-02-24T22:12:36Z")
That’s called a “bayonet” mount.
You’ll need to measure the diameter of the base, and try to find a replacement globe, but be aware that they are not standard.
Take a photo with a ruler as a guide, and go to Home Depot or Lowe’s and see if they have anything that will work.
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### Author:  [@Tim\_T-Bonham.net](https://boards.straightdope.com/u/Tim_T-Bonham.net)
#### Post date: [February 24, 2019, 10:16pm UTC](https://boards.straightdope.com/t/flush-ceiling-fixture/830134/3 "2019-02-24T22:16:15Z")
Also look around on/inside the fixture and see if you can find the manufacturer – that will help in finding replacements. (Unfortunately, the manufacturers sticker is sometimes on the back side, which is now buried into your ceiling.)