Library › Everyday objects › Light bulbs ·

PAR38 light bulb (E26 base)

What size is an PAR38 light bulb? · Modern device · basis: Philips product datasheet (Philips 14PAR38/LED/840/F40/DIM/ULW)

Also called: par38 bulb size, par38 dimensions, par38 light bulb dimensions, bombilla PAR38 medidas, lâmpada PAR38 dimensões, PAR38 Lampe Maße, ampoule PAR38 dimensions

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

length
122.2 mm
width
122.2 mm
height
134.9 mm

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).

PAR38 light bulb size chart

dimensionvalue
diameter122.2 mm (4.81 in)
max overall length134.9 mm (5.31 in)
baseE26
reference productPhilips 14PAR38/LED/840/F40/DIM/ULW

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

PhilipsPhilips 14PAR38/LED/840/F40/DIM/ULW datasheetwebPublisher's page; dimensions are facts

Free files

★ Free files 1 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

par38-light-bulb-envelopeEnvelope Ø122.2 × 134.9 mmSTEP · STL
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

Plain text: sheet.txt · JSON: /api/geometry?object=par38-light-bulb

PAR38 light bulb (E26 base), isometric render of a generated part
Render of par38-light-bulb-envelope from the free STEP; not to scale.

Fits with

Questions

How big is an PAR38 bulb?

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