{
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 "name": "Stretched Canvas",
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 "unit_note": "Count the individual stretched canvases in the pack and divide the listing price by that count. Compare unit prices only for canvases with the same width and height, since different sizes are not interchangeable; convert listed dimensions to cm for comparison.",
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   "attributes": [
    {
     "name": "Canvas finish",
     "handle": "canvas-finish",
     "values": [
      "Primed",
      "Unprimed",
      "Other"
     ]
    },
    {
     "name": "Canvas mounting/format",
     "handle": "canvas-mounting-format",
     "values": [
      "Canvas pad (paper-bound sheets)",
      "Canvas panel/board",
      "Canvas roll (by the yard/meter)",
      "Canvas sheet (loose)",
      "Stretched canvas",
      "Other"
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    },
    {
     "name": "Canvas texture",
     "handle": "canvas-texture",
     "values": [
      "Heavy grain",
      "Medium grain",
      "Smooth",
      "Other"
     ]
    },
    {
     "name": "Color",
     "handle": "color",
     "values": [
      "Beige",
      "Black",
      "Blue",
      "Bronze",
      "Brown",
      "Clear",
      "Gold",
      "Gray",
      "Green",
      "Multicolor",
      "Navy",
      "Orange",
      "Pink",
      "Purple",
      "Red",
      "Rose gold",
      "Silver",
      "White",
      "Yellow"
     ]
    },
    {
     "name": "Edge finish",
     "handle": "edge-finish",
     "values": [
      "Cutwork",
      "Fringed",
      "Hemstitched",
      "Lace trim",
      "No-sew",
      "Piped",
      "Rolled",
      "Scalloped",
      "Serged",
      "Other"
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    },
    {
     "name": "Painting canvas material",
     "handle": "painting-canvas-material",
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      "Linen",
      "Synthetic",
      "Other"
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    },
    {
     "name": "Painting surface priming type",
     "handle": "painting-surface-priming-type",
     "values": [
      "Absorbent ground",
      "Acrylic gesso (universal)",
      "Clear gesso",
      "Colored gesso",
      "No primer/coating",
      "Oil ground",
      "Watercolor ground",
      "Other"
     ]
    },
    {
     "name": "Paper size",
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     "values": [
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      "5\" x 7\"",
      "6\" x 6\"",
      "7.25\" x 10.5\"",
      "8\" x 10\"",
      "8.5\" x 11\"",
      "8.5\" x 14\"",
      "9\" x 12\"",
      "11\" x 14\"",
      "11\" x 17\"",
      "12\" x 12\"",
      "12\" x 18\"",
      "18\" x 24\"",
      "24\" x 36\"",
      "148 mm x 210 mm",
      "176 mm x 250 mm",
      "210 mm x 297 mm",
      "297 mm x 420 mm",
      "#10",
      "A1",
      "A2",
      "A3",
      "A4",
      "A5",
      "A6",
      "A7",
      "B5",
      "C5",
      "Custom size",
      "DL"
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      "Animal",
      "Art",
      "Bead & reel",
      "Birds",
      "Brick",
      "Bull's eye",
      "Camouflage",
      "Characters",
      "Checkered",
      "Chevron",
      "Chinoiserie",
      "Christmas",
      "Collage",
      "Coral",
      "Damask",
      "Diagonal",
      "Diamond",
      "Dog's tooth",
      "Dots",
      "Egg & dart",
      "Ethnic",
      "Everlasting knot",
      "Floral",
      "Fret",
      "Geometric",
      "Guilloche",
      "Hearts",
      "Illusion",
      "Lace"
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    },
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     "name": "Stretch level",
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      "Low stretch",
      "Moderate stretch",
      "No stretch",
      "Other"
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    },
    {
     "name": "Stretcher bar material",
     "handle": "stretcher-bar-material",
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      "Beech",
      "Birch",
      "Fir",
      "MDF/engineered wood",
      "Paulownia",
      "Pine",
      "Poplar",
      "Spruce",
      "Other"
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    },
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     "name": "Suitable for paint type",
     "handle": "suitable-for-paint-type",
     "values": [
      "Acrylic",
      "Acrylic & oil (universal)",
      "Gouache",
      "Ink",
      "Mixed media",
      "Oil",
      "Tempera",
      "Water-mixable oil",
      "Watercolor (when specially prepared)",
      "Other"
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    },
    {
     "name": "Textile finish / treatment",
     "handle": "textile-finish-treatment",
     "values": [
      "Brushed",
      "Coated (PU)",
      "Coated (PVC)",
      "Laminated",
      "Oilcloth",
      "Pre-washed",
      "Sanforized (pre-shrunk)",
      "Unfinished",
      "Waxed",
      "Other"
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    },
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     "name": "Water resistance level",
     "handle": "water-resistance-level",
     "values": [
      "Not water resistant",
      "Water-repellent",
      "Water-resistant",
      "Waterproof",
      "Other"
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 "fields": [
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   "key": "width_cm",
   "label": "Width",
   "type": "number",
   "unit": "cm",
   "values": null,
   "why_it_matters": "Canvas width determines the usable painting area and must match the intended work."
  },
  {
   "key": "height_cm",
   "label": "Height",
   "type": "number",
   "unit": "cm",
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   "unit": null,
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    "Linen",
    "Synthetic",
    "Other"
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    "Acrylic gesso (universal)",
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    "Colored gesso",
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    "Oil ground",
    "Watercolor ground",
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    "Pine",
    "Poplar",
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