{
  "schemaVersion": "1.0",
  "slug": "divider-partition-cut-list-calculator",
  "route": "/tools/components/divider-partition-cut-list-calculator/",
  "categorySlug": "cabinet-structure",
  "name": "Divider and Partition",
  "title": "Divider and Partition Cut List Calculator",
  "description": "Plan vertical cabinet dividers from the clear interior, top and bottom clearances, front setback, back clearance, and measured panel thickness.",
  "searchIntent": "cabinet divider partition cut list calculator",
  "modelVersion": "1.0.0",
  "reviewedDate": "2026-07-30",
  "defaultInputs": {
    "insideHeight": 33,
    "insideDepth": 23.25,
    "dividerCount": 1,
    "topClearance": 0,
    "bottomClearance": 0,
    "frontSetback": 0.75,
    "backClearance": 0.25,
    "materialThickness": 0.75
  },
  "inputs": [
    {
      "id": "insideHeight",
      "label": "Finished inside height",
      "default": 33,
      "min": 3,
      "max": 120,
      "step": 0.0625,
      "unit": "in",
      "help": "Clear cabinet height between the modeled top and bottom reference faces."
    },
    {
      "id": "insideDepth",
      "label": "Finished inside depth",
      "default": 23.25,
      "min": 3,
      "max": 60,
      "step": 0.0625,
      "unit": "in",
      "help": "Clear cabinet depth before front and back allowances."
    },
    {
      "id": "dividerCount",
      "label": "Divider count",
      "default": 1,
      "min": 1,
      "max": 24,
      "step": 1,
      "unit": "count",
      "help": "Number of identical divider blanks in this controlled opening group."
    },
    {
      "id": "topClearance",
      "label": "Top clearance",
      "default": 0,
      "min": 0,
      "max": 3,
      "step": 0.03125,
      "unit": "in",
      "help": "Deliberate clearance below the top reference face; joint engagement is not represented by a negative clearance."
    },
    {
      "id": "bottomClearance",
      "label": "Bottom clearance",
      "default": 0,
      "min": 0,
      "max": 3,
      "step": 0.03125,
      "unit": "in",
      "help": "Deliberate clearance above the bottom reference face."
    },
    {
      "id": "frontSetback",
      "label": "Front setback",
      "default": 0.75,
      "min": 0,
      "max": 12,
      "step": 0.0625,
      "unit": "in",
      "help": "Distance from the cabinet front reference face to the divider front edge."
    },
    {
      "id": "backClearance",
      "label": "Back clearance",
      "default": 0.25,
      "min": 0,
      "max": 12,
      "step": 0.0625,
      "unit": "in",
      "help": "Distance from divider back edge to the inside back reference face."
    },
    {
      "id": "materialThickness",
      "label": "Divider thickness",
      "default": 0.75,
      "min": 0.125,
      "max": 3,
      "step": 0.03125,
      "unit": "in",
      "help": "Measured finished thickness of the divider material."
    }
  ],
  "formulas": [
    {
      "part": "Vertical divider",
      "quantity": "dividerCount",
      "length": "insideHeight - topClearance - bottomClearance",
      "width": "insideDepth - frontSetback - backClearance",
      "thickness": "materialThickness",
      "formulaNote": "The panel fits inside the stated opening after explicit clearances. Dado, groove, tenon, or dowel engagement must be added from the approved joint detail."
    }
  ],
  "defaultParts": [
    {
      "name": "Vertical divider",
      "quantity": 1,
      "length": 33,
      "width": 22.25,
      "thickness": 0.75,
      "materialGroup": "Cabinet panel",
      "grain": "Vertical",
      "formulaNote": "The panel fits inside the stated opening after explicit clearances. Dado, groove, tenon, or dowel engagement must be added from the approved joint detail."
    }
  ],
  "assumptions": [
    "The divider is a rectangular panel installed inside a rectangular clear opening.",
    "Top and bottom inputs are fit clearances only; joint engagement is excluded from the generic formula.",
    "All dividers in one model record are identical and share the same opening, material, grain, and edge treatment.",
    "This is a reviewable planning model, not a universal cabinetmaking standard; the shop drawing, approved sample, field dimensions, and contract documents remain authoritative.",
    "Manufacturer hardware dimensions, load ratings, fastener schedules, edge distances, and drilling requirements govern whenever hardware is involved."
  ],
  "checks": [
    "Confirm top and bottom clearances leave the intended net divider length without weakening the selected joint.",
    "Verify front setback and back clearance preserve door, drawer, shelf, back, service, and finished-face relationships.",
    "Check divider centerlines against the required net opening widths on both sides rather than centering by habit.",
    "Measure the actual sheet, board, or panel thickness from the material lot and reconcile it with every mating groove, dado, fastener, and hardware allowance.",
    "Build or dry-fit the first assembly, record the verified result, and release the remaining batch only under the same model revision."
  ],
  "stopConditions": [
    "Stop when the divider is load-bearing and span, material, joint, or support requirements are unresolved.",
    "Stop when doors, drawers, slides, pullouts, or shelf-pin systems do not have a frozen clearance envelope.",
    "Stop when the exact hardware product, current manufacturer data, or required attachment method is unresolved; do not substitute a generic allowance.",
    "Stop when field dimensions, actual material thickness, grain requirement, or model revision cannot be verified before batch cutting."
  ],
  "sources": [
    {
      "name": "ANSI/AWI 1235-2024 – Specialty Casework",
      "url": "https://awinet.org/standards/specialty-casework/requirements-specialty-casework/3-2-material-6/",
      "scope": "Primary industry standard used here for casework material, component, and hardware-planning context. Its published scope is specialty casework; it does not set universal residential cabinet dimensions or replace project documents."
    }
  ]
}