{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "par38-light-bulb",
 "name": "PAR38 light bulb (E26 base)",
 "kind": "modern",
 "category": "Everyday objects",
 "group": "Light bulbs",
 "year": null,
 "question": "What size is an PAR38 light bulb?",
 "tags": [
  "light bulb",
  "lamp",
  "par38"
 ],
 "aliases": [
  "par38 bulb size",
  "par38 dimensions",
  "par38 light bulb dimensions"
 ],
 "overall_mm": {
  "length": 122.2,
  "width": 122.2,
  "height": 134.9
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/par38-light-bulb/",
 "sheet_txt": "https://xemstudio.com/objects/par38-light-bulb/sheet.txt",
 "sheet": {
  "basis": "Philips product datasheet (Philips 14PAR38/LED/840/F40/DIM/ULW)",
  "overall_mm": {
   "length": 122.2,
   "width": 122.2,
   "height": 134.9
  },
  "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)."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "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"
    ]
   ]
  }
 },
 "sheet_text": "PAR38 light bulb (E26 base) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/par38-light-bulb/  (CC BY 4.0)\nBasis: Philips product datasheet (Philips 14PAR38/LED/840/F40/DIM/ULW)\nCatalog version: 2026-10-20\n\nOverall (mm): length 122.2, width 122.2, height 134.9\n- PAR38: Ø122.2 mm, 134.9 mm maximum overall length, E26 base — figures from the Philips 14PAR38/LED/840/F40/DIM/ULW datasheet.\n- 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.\n- The file is a cylinder envelope Ø × MOL (the bulb fits inside it).\n\ndimension  value\ndiameter  122.2 mm (4.81 in)\nmax overall length  134.9 mm (5.31 in)\nbase  E26\nreference product  Philips 14PAR38/LED/840/F40/DIM/ULW\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Philips: Philips 14PAR38/LED/840/F40/DIM/ULW datasheet — web — Publisher's page; dimensions are facts — https://www.assets.lighting.philips.com/is/content/PhilipsLighting/fp929001319104-pss-en_us\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/par38-light-bulb/index.json\nAPI: https://xemstudio.com/api/geometry?object=par38-light-bulb\n",
 "sources": [
  {
   "publisher": "Philips",
   "title": "Philips 14PAR38/LED/840/F40/DIM/ULW datasheet",
   "url": "https://www.assets.lighting.philips.com/is/content/PhilipsLighting/fp929001319104-pss-en_us",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "a19-light-bulb",
  "a21-light-bulb",
  "br30-light-bulb",
  "br40-light-bulb",
  "par30l-light-bulb",
  "g25-light-bulb",
  "mr16-light-bulb",
  "gu10-par16-light-bulb"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn.",
 "mating": [],
 "faq": [
  {
   "q": "How big is an PAR38 bulb?",
   "a": "About Ø122.2 × 134.9 mm (reference product)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "par38-light-bulb-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "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",
   "note": "Envelope Ø122.2 × 134.9 mm"
  }
 ],
 "markdown": "https://xemstudio.com/objects/par38-light-bulb/index.md"
}