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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ContractWithCustomerBasisOfPricingAxis_C85CE56E788DDCB63E7301D02D06EB88" xlink:to="lab_us-gaap_ContractWithCustomerBasisOfPricingAxis_C85CE56E788DDCB63E7301D02D06EB88" xlink:type="arc" />
    <link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_DECB0C1F7B43A97D966501D02D06D3A0_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_DECB0C1F7B43A97D966501D02D06D3A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Basis of Pricing [Domain]</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_DECB0C1F7B43A97D966501D02D06D3A0_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerBasisOfPricingDomain_DECB0C1F7B43A97D966501D02D06D3A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Basis of Pricing [Domain]</link:label>
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    <link:label id="lab_us-gaap_SalesChannelDirectlyToConsumerMember_FD9907C3F449E5BD7FE401D02D066741_terseLabel_en-US" xlink:label="lab_us-gaap_SalesChannelDirectlyToConsumerMember_FD9907C3F449E5BD7FE401D02D066741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales Channel, Directly to Consumer [Member]</link:label>
    <link:label id="lab_us-gaap_SalesChannelDirectlyToConsumerMember_FD9907C3F449E5BD7FE401D02D066741_label_en-US" xlink:label="lab_us-gaap_SalesChannelDirectlyToConsumerMember_FD9907C3F449E5BD7FE401D02D066741" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Channel, Directly to Consumer [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SalesChannelDirectlyToConsumerMember" xlink:label="loc_us-gaap_SalesChannelDirectlyToConsumerMember_FD9907C3F449E5BD7FE401D02D066741" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ContractWithCustomerDurationAxis_C749A59C8632CF28607501D02D068236_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerDurationAxis_C749A59C8632CF28607501D02D068236" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Duration [Axis]</link:label>
    <link:label id="lab_us-gaap_ContractWithCustomerDurationAxis_C749A59C8632CF28607501D02D068236_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerDurationAxis_C749A59C8632CF28607501D02D068236" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Contract with Customer, Duration [Axis]</link:label>
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    <link:label id="lab_us-gaap_ContractWithCustomerDurationDomain_20B3552C68692706DE1601D02D0617C3_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerDurationDomain_20B3552C68692706DE1601D02D0617C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Duration [Domain]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis" xlink:label="loc_us-gaap_TimingOfTransferOfGoodOrServiceAxis_1EB4C27013D470FD15D301D02D06C3C5" xlink:type="locator" />
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    <link:label id="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1F5FDE844F42C46C50F801D02D062AFD_terseLabel_en-US" xlink:label="lab_us-gaap_TimingOfTransferOfGoodOrServiceDomain_1F5FDE844F42C46C50F801D02D062AFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Domain]</link:label>
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    <link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease right-of-use assets</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Right-of-Use Asset</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_9CE25ED0CA762C1F049905FA67EDB34B" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance lease liability, current</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161" xlink:to="lab_us-gaap_FinanceLeaseLiabilityCurrent_0DEA6B1D2226C2E47B8605FA67EDF161" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finance lease liability, non-current</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Liability, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6" xlink:to="lab_us-gaap_FinanceLeaseLiabilityNoncurrent_47679A14F0F334090C1B05FA67EDB2B6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease liability, current</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Liability, Current</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54" xlink:to="lab_us-gaap_OperatingLeaseLiabilityCurrent_DF24B96092B3D855CDD905FA67EDBD54" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease liability, non-current</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Liability, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F" xlink:to="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_43D7963709CCBFDFB8F505FA67EE241F" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average remaining lease term - finance leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Weighted Average Remaining Lease Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02" xlink:to="lab_us-gaap_FinanceLeaseWeightedAverageRemainingLeaseTerm1_AF47305A5B9009ED97E105FA67EECC02" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average remaining lease term - operating leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Remaining Lease Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_CB825B2D6E3FA7BADA4005FA67EEC4FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9_terseLabel_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average discount rate - finance leases</link:label>
    <link:label id="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9_label_en-US" xlink:label="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9" xlink:to="lab_us-gaap_FinanceLeaseWeightedAverageDiscountRatePercent_D5201CBFDAB38C811AF405FA67EED2D9" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average discount rate &#8211; operating leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64" xlink:to="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_E46713C8C3E5C22FB45805FA67EECB64" xlink:type="arc" />
    <link:label id="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA_terseLabel_en-US" xlink:label="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Area of Leased Office Building</link:label>
    <link:label id="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA_label_en-US" xlink:label="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area of Leased Office Building</link:label>
    <link:label id="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA_documentation_en-US" xlink:label="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Area of Leased Office Building</link:label>
    <link:loc xlink:href="lii-20190630.xsd#lii_AreaOfLeasedOfficeBuilding" xlink:label="loc_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:to="lab_lii_AreaOfLeasedOfficeBuilding_7A8A346BE830B603A14305FA67EEEEBA" xlink:type="arc" />
    <link:label id="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757_terseLabel_en-US" xlink:label="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase Price of Property at End of Lease Term</link:label>
    <link:label id="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757_label_en-US" xlink:label="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Purchase Price of Property at End of Lease Term</link:label>
    <link:label id="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757_documentation_en-US" xlink:label="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Purchase Price of Property at End of Lease Term</link:label>
    <link:loc xlink:href="lii-20190630.xsd#lii_PurchasePriceOfPropertyAtEndOfLeaseTerm" xlink:label="loc_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:to="lab_lii_PurchasePriceOfPropertyAtEndOfLeaseTerm_F2BF2CCC834D8866D9F105FA67EF1757" xlink:type="arc" />
    <link:label id="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3_terseLabel_en-US" xlink:label="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of Lease Balance as Final Payment End of Lease Term</link:label>
    <link:label id="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3_label_en-US" xlink:label="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of Lease Balance as Final Payment End of Lease Term</link:label>
    <link:label id="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3_documentation_en-US" xlink:label="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of Lease Balance as Final Payment End of Lease Term</link:label>
    <link:loc xlink:href="lii-20190630.xsd#lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm" xlink:label="loc_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:to="lab_lii_PercentageOfLeaseBalanceAsFinalPaymentEndOfLeaseTerm_CDD20F6F4F52A76F958605FA67EFD8A3" xlink:type="arc" />
    <link:label id="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB_terseLabel_en-US" xlink:label="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">debt instrument, Covenant for debt not paid</link:label>
    <link:label id="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB_label_en-US" xlink:label="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">debt instrument, Covenant for debt not paid</link:label>
    <link:label id="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB_documentation_en-US" xlink:label="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">debt instrument, Covenant for debt not paid</link:label>
    <link:loc xlink:href="lii-20190630.xsd#lii_DebtinstrumentCovenantfordebtnotpaid" xlink:label="loc_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:to="lab_lii_DebtinstrumentCovenantfordebtnotpaid_20E51E3F4BC81941E79F05FA67EF5BFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasePayments_E8C351A3288826E8D11F05FA67F0F9E7_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_E8C351A3288826E8D11F05FA67F0F9E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating cash flows from operating leases</link:label>
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    <link:label id="lab_lii_DomesticCreditFacilityMember_DE96FBE8AD0244AB172EB82FFE8D60F9_label_en-US" xlink:label="lab_lii_DomesticCreditFacilityMember_DE96FBE8AD0244AB172EB82FFE8D60F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Domestic Credit Facility [Member]</link:label>
    <link:label id="lab_lii_DomesticCreditFacilityMember_DE96FBE8AD0244AB172EB82FFE8D60F9_documentation_en-US" xlink:label="lab_lii_DomesticCreditFacilityMember_DE96FBE8AD0244AB172EB82FFE8D60F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Domestic Credit Facility [Member]</link:label>
    <link:loc xlink:href="lii-20190630.xsd#lii_DomesticCreditFacilityMember" xlink:label="loc_lii_DomesticCreditFacilityMember_DE96FBE8AD0244AB172EB82FFE8D60F9" xlink:type="locator" />
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    <link:label id="lab_lii_SubfacilityforSwinglineLoansMember_BBE282CB0976153EE744B82FFE8E338A_terseLabel_en-US" xlink:label="lab_lii_SubfacilityforSwinglineLoansMember_BBE282CB0976153EE744B82FFE8E338A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subfacility for Swingline Loans [Member]</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditMember_BBCA62D98FAE7893EAF6B82FFE8E2BBB_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_BBCA62D98FAE7893EAF6B82FFE8E2BBB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditMember_BBCA62D98FAE7893EAF6B82FFE8E2BBB_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_BBCA62D98FAE7893EAF6B82FFE8E2BBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
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