{
 "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": "g25-light-bulb",
 "name": "G25 light bulb (E26 base)",
 "kind": "modern",
 "category": "Everyday objects",
 "group": "Light bulbs",
 "year": null,
 "question": "What size is an G25 light bulb?",
 "tags": [
  "light bulb",
  "lamp",
  "g25"
 ],
 "aliases": [
  "g25 bulb size",
  "g25 dimensions",
  "g25 light bulb dimensions"
 ],
 "overall_mm": {
  "length": 81,
  "width": 81,
  "height": 121
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/g25-light-bulb/",
 "sheet_txt": "https://xemstudio.com/objects/g25-light-bulb/sheet.txt",
 "sheet": {
  "basis": "Philips product datasheet (Philips 4G25/PER/822-827/E26/CL/G)",
  "overall_mm": {
   "length": 81,
   "width": 81,
   "height": 121
  },
  "notes": [
   "G25: Ø81 mm, 121 mm maximum overall length, E26 base — figures from the Philips 4G25/PER/822-827/E26/CL/G datasheet.",
   "The shape code gives the diameter in eighths of an inch (G25); 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",
     "81 mm (3.19 in)"
    ],
    [
     "max overall length",
     "121 mm (4.76 in)"
    ],
    [
     "base",
     "E26"
    ],
    [
     "reference product",
     "Philips 4G25/PER/822-827/E26/CL/G"
    ]
   ]
  }
 },
 "sheet_text": "G25 light bulb (E26 base) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/g25-light-bulb/  (CC BY 4.0)\nBasis: Philips product datasheet (Philips 4G25/PER/822-827/E26/CL/G)\nCatalog version: 2026-10-20\n\nOverall (mm): length 81, width 81, height 121\n- G25: Ø81 mm, 121 mm maximum overall length, E26 base — figures from the Philips 4G25/PER/822-827/E26/CL/G datasheet.\n- The shape code gives the diameter in eighths of an inch (G25); 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  81 mm (3.19 in)\nmax overall length  121 mm (4.76 in)\nbase  E26\nreference product  Philips 4G25/PER/822-827/E26/CL/G\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Philips: Philips 4G25/PER/822-827/E26/CL/G datasheet — web — Publisher's page; dimensions are facts — https://www.assets.lighting.philips.com/is/content/PhilipsLighting/fp929001933604-pss-en_us\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/g25-light-bulb/index.json\nAPI: https://xemstudio.com/api/geometry?object=g25-light-bulb\n",
 "sources": [
  {
   "publisher": "Philips",
   "title": "Philips 4G25/PER/822-827/E26/CL/G datasheet",
   "url": "https://www.assets.lighting.philips.com/is/content/PhilipsLighting/fp929001933604-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",
  "par38-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 G25 bulb?",
   "a": "About Ø81 × 121 mm (reference product)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "g25-light-bulb-envelope",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/g25-light-bulb/g25-light-bulb-envelope.step",
   "stl": "https://xemstudio.com/files/hardware/g25-light-bulb/g25-light-bulb-envelope.stl",
   "note": "Envelope Ø81 × 121 mm"
  }
 ],
 "markdown": "https://xemstudio.com/objects/g25-light-bulb/index.md"
}