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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001436716-09-000047.txt : 20091002
<SEC-HEADER>0001436716-09-000047.hdr.sgml : 20091002
<ACCEPTANCE-DATETIME>20091002093020
ACCESSION NUMBER:		0001436716-09-000047
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090930
FILED AS OF DATE:		20091002
DATE AS OF CHANGE:		20091002

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mereness Scott T
		CENTRAL INDEX KEY:			0001307217

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13646
		FILM NUMBER:		091100461

	MAIL ADDRESS:	
		STREET 1:		C/O LIPPERT COMPONENTS, INC.
		STREET 2:		2766 COLLEGE AVENUE
		CITY:			GOSHEN
		STATE:			IN
		ZIP:			46528

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DREW INDUSTRIES INC
		CENTRAL INDEX KEY:			0000763744
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLE PARTS & ACCESSORIES [3714]
		IRS NUMBER:				133250533
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		200 MAMARONECK AVE
		CITY:			WHITE PLAINS
		STATE:			NY
		ZIP:			10601
		BUSINESS PHONE:		9144289098

	MAIL ADDRESS:	
		STREET 1:		200 MAMARONECK AVE
		CITY:			WHITE PLAINS
		STATE:			NY
		ZIP:			10601
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-09-30</periodOfReport>

    <issuer>
        <issuerCik>0000763744</issuerCik>
        <issuerName>DREW INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>DW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001307217</rptOwnerCik>
            <rptOwnerName>Mereness Scott T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LIPPERT COMPONENTS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2703 COLLEGE AVENUE</rptOwnerStreet2>
            <rptOwnerCity>GOSHEN</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46528</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>COO of Subsidiary</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Deferred Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-09-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>691.56</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>21.69</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2012-11-15</value>
            </exerciseDate>
            <expirationDate>
                <value>2012-11-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>691.56</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18306.37</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Executive Employment and Non-Competition arrangement among Lippert Components, Kinro, and Scott T. Mereness, Chief Operating Officer of Lippert Components and Vice President of Kinro, Mr. Mereness will receive for the period January 1, 2009 through December 31, 2011, annual base salary of $420,000, consisting of $360,000 in cash and $60,000 in deferred stock units.  The deferred stock units will be issued quarterly on the last day of each calendar quarter at the rate of $15,000 per quarter.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Joseph S. Giordano III, on behalf of Scott T. Mereness</signatureName>
        <signatureDate>2009-10-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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