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          ],
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          ],
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          "name": "Flange Width",
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          ],
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              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_FitsFanDiameter_16in_1_7eeefca2c1.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_FitsFanDiameter_16in_1_7eeefca2c1.html"
        },
        {
          "name": "Overall Diameter",
          "values": [
            {
              "value": "Not Applicable",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_OverallDiameter_NotApplicable_1_a6c585cd43.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4973000/menu_attr_pair_OverallDiameter_NotApplicable_1_a6c585cd43.html"
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        {
          "name": "Rough Opening Length",
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              "value": "17 1/2 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningLength_1712in_1_e92ed4d978.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningLength_1712in_1_e92ed4d978.html"
        },
        {
          "name": "Overall Width",
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            {
              "value": "19 3/4 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_OverallWidth_1934in_1_5000da8143.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_OverallWidth_1934in_1_5000da8143.html"
        },
        {
          "name": "Rough Opening Width",
          "values": [
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              "value": "17.5 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningWidth_175in_1_d089486060.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningWidth_175in_1_d089486060.html"
        },
        {
          "name": "Frame Depth",
          "values": [
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              "value": "1 5/8 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_FrameDepth_158in_1_a205f18f08.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_FrameDepth_158in_1_a205f18f08.html"
        },
        {
          "name": "Rough Opening Diameter",
          "values": [
            {
              "value": "17 1/2 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningDiameter_1712in_1_d5573989c0.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_RoughOpeningDiameter_1712in_1_d5573989c0.html"
        },
        {
          "name": "Overall Length",
          "values": [
            {
              "value": "4 1/2 in",
              "url": "/python/html5/menu_attr_pair/1000/3000000/3308000/menu_attr_pair_OverallLength_412in_1_8688899cd5.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/3000000/3308000/menu_attr_pair_OverallLength_412in_1_8688899cd5.html"
        },
        {
          "name": "Overall Height",
          "values": [
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              "value": "19 3/4 in",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_OverallHeight_1934in_1_7506c8099f.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_OverallHeight_1934in_1_7506c8099f.html"
        },
        {
          "name": "Item",
          "values": [
            {
              "value": "Wall Backdraft Damper",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Item_WallBackdraftDamper_1_2a191e6e13.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Item_WallBackdraftDamper_1_2a191e6e13.html"
        },
        {
          "name": "Type",
          "values": [
            {
              "value": "Wall Mount, Supply",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Type_WallMountSupply_1_511d8bc6fc.html"
            },
            {
              "value": "Count",
              "url": "/python/html5/menu_attr_pair/1000/70000/menu_attr_pair_Type_Count_1_be1384a0c8.html"
            },
            {
              "value": "ean",
              "url": "/python/html5/menu_attr_pair/1000/3000/menu_attr_pair_Type_ean_1_ca8a058b84.html"
            },
            {
              "value": "upc",
              "url": "/python/html5/menu_attr_pair/1000/61000/menu_attr_pair_Type_upc_1_b8e0fca956.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Type_WallMountSupply_1_511d8bc6fc.html"
        },
        {
          "name": "Max  Velocity (FPM)",
          "values": [
            {
              "value": "2,250",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_MaxVelocityFPM_2250_1_437f1d7c02.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_MaxVelocityFPM_2250_1_437f1d7c02.html"
        },
        {
          "name": "Construction Material",
          "values": [
            {
              "value": "16-gauge Extruded Aluminum Frame, Galvanized Steel Tie Rods and Stainless Steel Hardware",
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_ConstructionMaterial_16gaugeExtrudedAluminumFrameGalvanizedStee_1_4ceb71e91f.html"
        },
        {
          "name": "Includes",
          "values": [
            {
              "value": "Felted Edges For Quiet Operation",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Includes_FeltedEdgesForQuietOperation_1_a94eefd021.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Includes_FeltedEdgesForQuietOperation_1_a94eefd021.html"
        },
        {
          "name": "Blade",
          "values": [
            {
              "value": "Aluminum Blade w/ Felt Seal",
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5009000/menu_attr_pair_Blade_AluminumBladewFeltSeal_1_f58d5011d7.html"
        },
        {
          "name": "Rough Opening Dims",
          "values": [
            {
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          ],
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        },
        {
          "name": "Damper Finish",
          "values": [
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              "value": "Mill Finish",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_DamperFinish_MillFinish_1_8446ec2b6d.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_DamperFinish_MillFinish_1_8446ec2b6d.html"
        },
        {
          "name": "Closure Type",
          "values": [
            {
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              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_ClosureType_Gravity_1_16c645c19b.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_ClosureType_Gravity_1_16c645c19b.html"
        },
        {
          "name": "Blade Material",
          "values": [
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000000/1561000/menu_attr_pair_BladeMaterial_Aluminum_1_5a527f4db8.html"
        },
        {
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          "values": [
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            },
            {
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_ASIN_B071VDJB1Q_1_9dd1a97c6f.html"
        },
        {
          "name": "AdultProduct",
          "values": [
            {
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              "url": "/python/html5/menu_attr_pair/menu_attr_pair_AdultProduct_False_1_c6441ece7c.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_AdultProduct_False_1_c6441ece7c.html"
        },
        {
          "name": "Amount",
          "values": [
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              "value": "102.99",
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            },
            {
              "value": "108.99",
              "url": "/python/html5/menu_attr_pair/1000/4000000/4336000/menu_attr_pair_Amount_10899_1_6525681876.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000000/1557000/menu_attr_pair_Amount_10299_1_8cd40ef7cd.html"
        },
        {
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            {
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_ASIN_B071VDJB1Q_1_9dd1a97c6f.html"
        },
        {
          "name": "Autographed",
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            {
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              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Autographed_False_1_3dfa18ce7d.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Autographed_False_1_3dfa18ce7d.html"
        },
        {
          "name": "Binding",
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            {
              "value": "Misc.",
              "url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_Binding_Misc_1_e113619f99.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_Binding_Misc_1_e113619f99.html"
        },
        {
          "name": "Brand",
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            },
            {
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              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Brand_Dayton_1_0d2fd0b16e.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Brand_CAIDAYTON_1_652423cbd8.html"
        },
        {
          "name": "Case",
          "values": [
            {
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              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Case_1_1_4de75d695a.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/menu_attr_pair_Case_1_1_4de75d695a.html"
        },
        {
          "name": "Cat",
          "values": [
            {
              "value": "Industrial & Scientific",
              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Cat_IndustrialScientific_1_c583162a01.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_Cat_IndustrialScientific_1_c583162a01.html"
        },
        {
          "name": "CatId",
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              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatId_16310091_1_0f77fb0abe.html"
            }
          ],
          "name_url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatId_16310091_1_0f77fb0abe.html"
        },
        {
          "name": "CatTree",
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              "value": "16310091",
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            },
            {
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              "url": "/python/html5/menu_attr_pair/1000/1000/menu_attr_pair_CatTree_16310161_1_0db56bb8c8.html"
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          ],
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        },
        {
          "name": "ClassificationId",
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            {
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          ],
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        },
        {
          "name": "CurrencyCode",
          "values": [
            {
              "value": "USD",
              "url": "/python/html5/menu_attr_pair/1000/62000/menu_attr_pair_CurrencyCode_USD_1_a688e6506c.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/62000/menu_attr_pair_CurrencyCode_USD_1_a688e6506c.html"
        },
        {
          "name": "DisplayName",
          "values": [
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              "value": "Categories",
              "url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_DisplayName_Categories_1_f0aa662226.html"
            },
            {
              "value": "Ducting",
              "url": "/python/html5/menu_attr_pair/1000/3000000/3749000/menu_attr_pair_DisplayName_Ducting_1_a2897cf3c7.html"
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/60000/menu_attr_pair_DisplayName_Categories_1_f0aa662226.html"
        },
        {
          "name": "Electric_fan_design",
          "values": [
            {
              "value": "exhaust_fan",
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/4000000/4971000/menu_attr_pair_Electricfandesign_exhaustfan_1_2c2723e0a6.html"
        },
        {
          "name": "Height",
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              "url": "/python/html5/menu_attr_pair/1000/187000/menu_attr_pair_Height_1068_1_583233dcb6.html"
            },
            {
              "value": "2.0",
              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Height_20_1_a8500c4566.html"
            },
            {
              "value": "2.00",
              "url": "/python/html5/menu_attr_pair/1000/103000/menu_attr_pair_Height_200_1_82f2b6878b.html"
            },
            {
              "value": "20.8",
              "url": "/python/html5/menu_attr_pair/1000/328000/menu_attr_pair_Height_208_1_a86a410672.html"
            },
            {
              "value": "20.80",
              "url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_Height_2080_1_8c4983e468.html"
            },
            {
              "value": "400",
              "url": "/python/html5/menu_attr_pair/1000/75000/menu_attr_pair_Height_400_1_ea3e9de298.html"
            },
            {
              "value": "488",
              "url": "/python/html5/menu_attr_pair/1000/217000/menu_attr_pair_Height_488_1_19a7107c9c.html"
            },
            {
              "value": "73",
              "url": "/python/html5/menu_attr_pair/1000/207000/menu_attr_pair_Height_73_1_caed632ec2.html"
            },
            {
              "value": "75",
              "url": "/python/html5/menu_attr_pair/menu_attr_pair_Height_75_1_a0092a3e31.html"
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          ],
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        },
        {
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          ],
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        },
        {
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          ],
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        },
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        {
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        },
        {
          "name": "Item_package_quantity",
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          ],
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        {
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/5000000/5019000/menu_attr_pair_Keyword_5NKN4_1_20bd85a0f7.html"
        },
        {
          "name": "Label",
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            {
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              "url": "/python/html5/menu_attr_pair/1000/4000000/4970000/menu_attr_pair_Label_Dayton_1_2d14d631ad.html"
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          ],
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        {
          "name": "Length",
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              "url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Length_20_1_9313541e58.html"
            },
            {
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              "url": "/python/html5/menu_attr_pair/1000/158000/menu_attr_pair_Length_200_1_4f61f3f6db.html"
            },
            {
              "value": "20.0",
              "url": "/python/html5/menu_attr_pair/1000/158000/menu_attr_pair_length_200_1_4c5f510d29.html"
            },
            {
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          ],
          "name_url": "/python/html5/menu_attr_pair/1000/66000/menu_attr_pair_Length_20_1_9313541e58.html"
        },
        {
          "name": "Link",
          "values": [
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            },
            {
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            },
            {
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            {
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            {
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              "url": "/python/html5/menu_attr_pair/1000/3000/menu_attr_pair_Material_Aluminum_1_5bd454a9a8.html"
            },
            {
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              "url": "/python/html5/menu_attr_pair/1000/96000/menu_attr_pair_Material_Plastic_1_434d8fabff.html"
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            {
              "value": "Stainless Steel",
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            },
            {
              "value": "Other",
              "url": "/python/html5/menu_attr_pair/1000/77000/menu_attr_pair_MaterialType_Other_1_3c5882e6a0.html"
            },
            {
              "value": "Stainless Steel",
              "url": "/python/html5/menu_attr_pair/1000/70000/menu_attr_pair_MaterialType_StainlessSteel_1_ce751378d6.html"
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        {
          "name": "Memorabilia",
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              "url": "/python/html5/menu_attr_pair/menu_attr_pair_ProductGroup_BISS_1_96cddee76e.html"
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            {
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