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  <xs:element id="boxl_DebtInstrumentCovenantMaximumEquityOfferingProceedsRetainedForWorkingCapitalAndGeneralCorporatePurposes" abstract="false" name="DebtInstrumentCovenantMaximumEquityOfferingProceedsRetainedForWorkingCapitalAndGeneralCorporatePurposes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_DebtInstrumentCovenantMaximumIndebtednessAmount" abstract="false" name="DebtInstrumentCovenantMaximumIndebtednessAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_PercentageIncreaseInIssueOfWarrants" abstract="false" name="PercentageIncreaseInIssueOfWarrants" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightRepricingThresholdTradingDays" abstract="false" name="ClassOfWarrantOrRightRepricingThresholdTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="boxl_FeesPayablePercentage" abstract="false" name="FeesPayablePercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_FeesPayableThresholdAmount" abstract="false" name="FeesPayableThresholdAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_SharesIssuanceDiscount" abstract="false" name="SharesIssuanceDiscount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_NumberWarrantsAfterRepricing" abstract="false" name="NumberWarrantsAfterRepricing" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_MarketValueOfCommonStockOnMeasurementDateMember" abstract="true" name="MarketValueOfCommonStockOnMeasurementDateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_IncomeTaxesTable" abstract="true" name="IncomeTaxesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="boxl_IncomeTaxesLineItems" abstract="true" name="IncomeTaxesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="boxl_NonVotingSeriesAPreferredStockMember" abstract="true" name="NonVotingSeriesAPreferredStockMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_GenesisCollaborationLLCMember" abstract="true" name="GenesisCollaborationLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_SaharaHoldingLimitedMember" abstract="true" name="SaharaHoldingLimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_DividendsDividendRatePeriodStartAxis" abstract="true" name="DividendsDividendRatePeriodStartAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="boxl_DividendsDividendRatePeriodStartDomain" abstract="true" name="DividendsDividendRatePeriodStartDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_October22027Member" abstract="true" name="October22027Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_October22028Member" abstract="true" name="October22028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_October22029Member" abstract="true" name="October22029Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_October22030Member" abstract="true" name="October22030Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_TemporaryEquityStockIssuedDuringPeriodSharesAcquisitions" abstract="false" name="TemporaryEquityStockIssuedDuringPeriodSharesAcquisitions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_TemporaryEquityConvertibleThresholdPercentageOfStockPriceTrigger" abstract="false" name="TemporaryEquityConvertibleThresholdPercentageOfStockPriceTrigger" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_TemporaryEquityConvertibleThresholdTradingDays" abstract="false" name="TemporaryEquityConvertibleThresholdTradingDays" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="boxl_TemporaryEquitySharesConversionOfConvertibleSecurities" abstract="false" name="TemporaryEquitySharesConversionOfConvertibleSecurities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_PreferredStockInterestRatePercentage" abstract="false" name="PreferredStockInterestRatePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_PreferredStockPercentageOfProceedsUsedForRedemption" abstract="false" name="PreferredStockPercentageOfProceedsUsedForRedemption" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_NumberOfVotesPerShare" abstract="false" name="NumberOfVotesPerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="boxl_PreFundedWarrantsMember" abstract="true" name="PreFundedWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_CommonStockWarrantsMember" abstract="true" name="CommonStockWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightExercisableTerm" abstract="false" name="ClassOfWarrantOrRightExercisableTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="boxl_SaleOfStockAggregateCommonStockOfferingPrice" abstract="false" name="SaleOfStockAggregateCommonStockOfferingPrice" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_SaleOfStockSalesAgentCommissionsPercentage" abstract="false" name="SaleOfStockSalesAgentCommissionsPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_EquityIncentivePlan2014Member" abstract="true" name="EquityIncentivePlan2014Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_EquityIncentivePlan2021Member" abstract="true" name="EquityIncentivePlan2021Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_SeniorManagementMember" abstract="true" name="SeniorManagementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfPlans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="boxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfConsecutive12MonthPerformancePeriods" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfConsecutive12MonthPerformancePeriods" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="boxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetPayout" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTargetPayout" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutToTargetCashRatio" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPayoutToTargetCashRatio" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="boxl_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPayout" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPayout" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightRollForward" abstract="true" name="ClassOfWarrantOrRightRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightGranted" abstract="false" name="ClassOfWarrantOrRightGranted" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightExercised" abstract="false" name="ClassOfWarrantOrRightExercised" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_ClassOfWarrantOrRightExercisable" abstract="false" name="ClassOfWarrantOrRightExercisable" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_WarrantsMember" abstract="true" name="WarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_SalesMarketingManagementAndRelatedConsultingServicesMember" abstract="true" name="SalesMarketingManagementAndRelatedConsultingServicesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_ManagementAgreementMember" abstract="true" name="ManagementAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_InventoryFinanceAgreementMember" abstract="true" name="InventoryFinanceAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_MarkElliottMember" abstract="true" name="MarkElliottMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_J.J.ASTORMember" abstract="true" name="J.J.ASTORMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionMonthlyFixedPaymentForServices" abstract="false" name="RelatedPartyTransactionMonthlyFixedPaymentForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionPercentageOfCommissionOnGrossProfitDerivedOnTotalPurchaseOrderRevenue" abstract="false" name="RelatedPartyTransactionPercentageOfCommissionOnGrossProfitDerivedOnTotalPurchaseOrderRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_TermManagementAgreementPaysAfterTermination" abstract="false" name="TermManagementAgreementPaysAfterTermination" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="boxl_PercentageOfAnnualManagementFeePayableInCash" abstract="false" name="PercentageOfAnnualManagementFeePayableInCash" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_ManagementFeeExpenseAnnualMaximum" abstract="false" name="ManagementFeeExpenseAnnualMaximum" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionMaximumAggregatePurchaseAmount" abstract="false" name="RelatedPartyTransactionMaximumAggregatePurchaseAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionTerm" abstract="false" name="RelatedPartyTransactionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionAdvancePayablePeriod" abstract="false" name="RelatedPartyTransactionAdvancePayablePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionIncreaseInOutstandingBalancePayableInEventOfDefaultPercentage" abstract="false" name="RelatedPartyTransactionIncreaseInOutstandingBalancePayableInEventOfDefaultPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionAccruedInterestInEventOfDefaultPercentage" abstract="false" name="RelatedPartyTransactionAccruedInterestInEventOfDefaultPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionFinancePercentage" abstract="false" name="RelatedPartyTransactionFinancePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionMaximumAggregatePurchaseAmountIncrease" abstract="false" name="RelatedPartyTransactionMaximumAggregatePurchaseAmountIncrease" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionRateRatioPer0.80" abstract="false" name="RelatedPartyTransactionRateRatioPer0.80" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionOutstandingCommitmentConverted" abstract="false" name="RelatedPartyTransactionOutstandingCommitmentConverted" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionSharesIssuedInConversion" abstract="false" name="RelatedPartyTransactionSharesIssuedInConversion" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionConversionPricePerShare" abstract="false" name="RelatedPartyTransactionConversionPricePerShare" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionThresholdProceedsFromSaleOfConvertedShares" abstract="false" name="RelatedPartyTransactionThresholdProceedsFromSaleOfConvertedShares" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionShortfallPaymentPeriod" abstract="false" name="RelatedPartyTransactionShortfallPaymentPeriod" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="boxl_RelatedPartyTransactionDepositPercentageOfPurchasePriceOfInventory" abstract="false" name="RelatedPartyTransactionDepositPercentageOfPurchasePriceOfInventory" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_SupplierOneMember" abstract="true" name="SupplierOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_SupplierTwoMember" abstract="true" name="SupplierTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_AccountsPayableAndPrepayment" abstract="false" name="AccountsPayableAndPrepayment" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_AmericaSegmentMember" abstract="true" name="AmericaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_EuropeMiddleEastAndAfricaSegmentMember" abstract="true" name="EuropeMiddleEastAndAfricaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_GeographicRegionsOtherThanAmericaEuropeMiddleEastAndAfricaSegmentMember" abstract="true" name="GeographicRegionsOtherThanAmericaEuropeMiddleEastAndAfricaSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_EquityLineOfCreditMember" abstract="true" name="EquityLineOfCreditMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="boxl_CommonStockProposedSharesAuthorized" abstract="false" name="CommonStockProposedSharesAuthorized" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="boxl_CommonStockProposedSharesIssuanceNonPublicTransactionThresholdPercent" abstract="false" name="CommonStockProposedSharesIssuanceNonPublicTransactionThresholdPercent" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="boxl_ProposedLineOfCreditFacilityMaximumBorrowingCapacity" abstract="false" name="ProposedLineOfCreditFacilityMaximumBorrowingCapacity" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="boxl_ProposedDebtInstrumentTerm" abstract="false" name="ProposedDebtInstrumentTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
</xs:schema>
