Ceiling electrical box is too big for the light fixture
An oversized or bent electrical box leaves visible gaps and causes new light fixtures to sag. This prevents people from upgrading, forcing them to return multiple fixtures and stick with the exact same old light. Others are incorrectly told that their only option is to drywall over the exposed holes.
What the numbers show
Counted from the threads quoted below. How we count
- People have been saying this in most months since September 2026.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
Found another way around this?
Share your steps and trade-offs so fellow engineers don't have to reinvent the wheel. No account required.
Ceiling electrical box is too big for the light fixture
- 1Patching the drywallDid this help you?
- 2Using a ceiling light molded plate (round trim piece to cover the hole)Did this help you?
- 3Installing a ceiling fan box from truss to truss to solve tilting issuesDid this help you?
- 4Drywalling over the exposed gaps around the boxDid this help you?
- 5Using a cover plate to hide the gapDid this help you?
- 6Removing the large box, installing a smaller 1-gang box, and patching the drywallDid this help you?
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Whoever cut it made it oversize.”source ↗
“The old box was bent so any light fixture you try on it it’s sagged so I had to find the exact same type”source ↗
“All the wires are in flexible and I can’t find the right ceiling fixture to put up. I bought and return three different ones.”source ↗
“Noticed the electrician used a large device box in the wall and now theres this large gap.”source ↗
“I know I should not drywall over the gaps that the hexagonal box has left like he’s suggesting, but he continues to tell me it’s the only option and can’t be fixed.”source ↗
Where this came up
People with this problem also raised
- 2Can you install a ceiling fan on a regular electrical box?
- 7Can you put pendant lights over an island with recessed cans?
- 2Bright LED bulbs for enclosed fixtures
- 3Can I fix a hanging light fixture without an electrician?
- 2How to change a light fixture over stairs without a ladder
- 2Why does my new ceiling fan keep wobbling after reinstalling it?