# PAR38 light bulb (E26 base)

> What size is an PAR38 light bulb?

- Category: Everyday objects › Light bulbs
- Kind: Modern device
- Basis: Philips product datasheet (Philips 14PAR38/LED/840/F40/DIM/ULW)
- Page: https://xemstudio.com/objects/par38-light-bulb/ · JSON: https://xemstudio.com/api/geometry?object=par38-light-bulb · Plain text: https://xemstudio.com/objects/par38-light-bulb/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); linked files under their publishers' licenses
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 122.2 | 122.2 | 134.9 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- PAR38: Ø122.2 mm, 134.9 mm maximum overall length, E26 base — figures from the Philips 14PAR38/LED/840/F40/DIM/ULW datasheet.
- The shape code gives the diameter in eighths of an inch (PAR38); the ANSI C78 envelope limits are paywalled, so a typical current product is quoted. Other brands differ by a few mm in length.
- The file is a cylinder envelope Ø × MOL (the bulb fits inside it).

## Sizes

| dimension | value |
|---|---|
| diameter | 122.2 mm (4.81 in) |
| max overall length | 134.9 mm (5.31 in) |
| base | E26 |
| reference product | Philips 14PAR38/LED/840/F40/DIM/ULW |

## Where the files are

- Philips: [Philips 14PAR38/LED/840/F40/DIM/ULW datasheet](https://www.assets.lighting.philips.com/is/content/PhilipsLighting/fp929001319104-pss-en_us) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/par38-light-bulb/index.json

- par38-light-bulb-envelope: [STEP](https://xemstudio.com/files/hardware/par38-light-bulb/par38-light-bulb-envelope.step) · [STL](https://xemstudio.com/files/hardware/par38-light-bulb/par38-light-bulb-envelope.stl) — Envelope Ø122.2 × 134.9 mm

## Questions

**How big is an PAR38 bulb?**

About Ø122.2 × 134.9 mm (reference product).

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