How to identify GU24
- Look for two short pins projecting from a flat plastic base.
- Measure roughly 24 mm between pin centers.
- Push into the socket and rotate to lock.
Where it is commonly used
Energy-code fixturesCeiling lightsUtility fixturesApartments
Common use is a clue, not proof. The fixture label and model documentation take priority over a visual match.
Bulb shapes sold with this base
You may see these shapes with a GU24 base. The base code does not guarantee the bulb width, length, beam angle, or clearance.
Before you buy a replacement
- GU24-to-E26 adapters may defeat the fixture's original certification intent.
- Confirm the fixture's ballast or direct-wire requirements.
- Check overall bulb height inside shallow covers.