What is a door jamb?
A door jamb is an upright side of a door opening. A door frame has two: the hinge jamb, where the door hangs, and the lock jamb on the other side.
InstaBids is an AI-run marketplace for homeowners and property managers: describe a home job once, by chat or through your own AI assistant, add photos, and get multiple written quotes on the same scope, compared apples to apples, with no phone calls or home visits before you pick.
- Describe it onceBy chat, or through your own AI assistant, and add photos.
- Post it and send itContractors bid in writing on that scope.
- Compare line by lineEvery quote is written against the same scope.
- You chooseContact details stay hidden until you pick and they confirm.
For your AI assistant
MCP connector · REST API · plain HTMLHand any of these to your assistant and it can help you write this job's request; you send the request yourself. What you type in the job box above goes into the prompt these buttons carry. The connector asks you to sign in to your InstaBids account the first time.
- MCP connector URL
https://instabids.ai/api/agent/mcp - Agent API (OpenAPI)
https://instabids.ai/openapi.json - Start-request link
https://instabids.ai/intake?from=glossary-door-jamb&page_type=glossary&job=I+need+help+with+a+door+jamb.&utm_source=us&utm_medium=page&utm_campaign=glossary - Prompt for any AI, with your job
- ChatGPTOpens with the prompt
- ClaudeOpens with the prompt
- GrokOpens with the prompt
- GeminiCopies the prompt, then opens
Every page is plain HTML. Steps for every assistant: add to your assistant.
What is a hinge jamb?
The hinge jamb is the upright side of the frame that carries the door's hinges. The federal glossary describes it as the part of the door assembly the door is attached and secured to through the hinges. “JAMB/WALL—That component of a door assembly to which a door is attached and secured by means of the hinges.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30.
What does door jamb mean in building terminology?
In building terms a jamb is an upright side member of a door or window opening, and the top member is the head. DOE's door-installation job aid asks for jambs that are plumb, meaning truly vertical, before a new door goes in. “JAMB—The exposed vertical member of either side of a door or window opening.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30. “HEAD—Top horizontal member of a door or window frame.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30. “Prepare opening by ensuring that jambs are plumb and threshold is level.” Source: U.S. Department of Energy, Weatherization Assistance Program, read 2026-10-30.
What Is Jamb Depth?
Jamb depth is the width of the jamb, measured perpendicular to the face of the door or wall at the edge of the opening. “JAMB DEPTH—The width of the jamb, measured perpendicular to the door or wall face at the edge of the opening.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30.
What are the parts of a door jamb called?
A door frame has two upright jambs, named the hinge jamb and the lock jamb, with the head across the top. A jamb anchor is the metal device that ties a jamb to the wall. “DOOR JAMBS—The two vertical components of a door frame called the hinge jamb and the lock jamb.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30. “JAMB ANCHOR—A metal device inserted in or attached to the wall side of a jamb to secure the frame to the wall.” Source: National Bureau of Standards, hosted by NIST, read 2026-10-30.
Why Should I Repair My Door Jamb?
Damage to a jamb can affect how a door moves, closes and locks. DOE explains that misalignment can remain even after the hardware or the door itself is replaced, and the poor fit can allow air leaks. “Even with new hardware, a damaged door or doorjamb may cause misalignment, resulting in a door that does not open or close properly, cannot lock effectively, and is prone to air leaks.” Source: U.S. Department of Energy, read 2026-10-30. “Even with a new door, a damaged frame (head jamb and/or side jambs) may cause misalignment, resulting in a door that does not open or close properly and is prone to air leaks.” Source: U.S. Department of Energy, read 2026-10-30.
Sources
- Terms and Definitions for Door and Window Security — National Bureau of Standards, hosted by NIST; published 1977-05; read 2026-10-30.
- Repairing Windows & Doors — U.S. Department of Energy; read 2026-10-30.
- 21-2 Door Installation (job aid) — U.S. Department of Energy, Weatherization Assistance Program; published 2024-06; read 2026-10-30.