A Leading National Supplier of a Wide Variety of

Components for RV’s and Manufactured Homes

Drew Industries (NYSE:DW)

2003

Forward Looking Statements

This presentation contains certain “forward-looking statements” within the meaning of the Private Securities
Litigation Reform Act of 1995 with respect to financial condition, results of operations, business strategies,
operating efficiencies or synergies, competitive position, growth opportunities for existing products, plans and
objectives of management, markets for the Company’s common stock and other matters. Statements in this
presentation that are not historical facts are “forward-looking statements” for the purpose of the safe harbor
provided by Section 21E of the Exchange Act and Section 27A of the Securities Act. Forward-looking statements,
including, without limitation those relating to our future business prospects, revenues, expenses and income,
wherever they occur in this presentation, are necessarily estimates reflecting the best judgment of our senior
management, at the time such statements were made, and involve a number of risks and uncertainties that could
cause actual results to differ materially from those suggested by forward-looking statements. The Company does
not undertake to update forward-looking statements to reflect circumstances or events that occur after the date the
forward-looking statements are made. You should consider forward-looking statements, therefore, in light of
various important factors, including those set forth in this presentation and the Company’s SEC filings.

There are a number of factors, many of which are beyond the Company’s control, which could cause actual results
and events to differ materially from those described in the forward-looking statements. These factors include pricing
pressures due to domestic and foreign competition, costs and availability of raw materials (particularly steel and
related components, vinyl, aluminum, glass and ABS resin), availability of retail and wholesale financing for
manufactured homes, availability and costs of labor, inventory levels of retailers and manufacturers, levels of
repossessed manufactured homes, the disposition into the market by FEMA by sale or otherwise of RVs or
manufactured homes purchased by FEMA in connection with natural disasters, changes in zoning regulations for
manufactured homes, the decline in the manufactured housing industry, the financial condition of our customers,
retention of significant customers, interest rates, oil and gasoline prices, the outcome of litigation, and adverse
weather conditions impacting retail sales. In addition, national and regional economic conditions and consumer
confidence may affect the retail sale of recreational vehicles and manufactured homes.

Page 2

About Drew Industries

A leading national
manufacturer of
quality components
for Recreational
Vehicles (RV) and
Manufactured
Homes (MH)

Page 3

Headquartered in White
Plains, New York – 10
employees

42 manufacturing facilities in
the U.S. and 1 facility in
Canada

Approximately 4,000
employees nationwide

Organic growth from 2001
through 3/31/07 was over
$210 million or a 12%
average annual growth,
excluding price increases,
acquisitions, and FEMA
business

Company Overview

Financial Performance

Sales and EBITDA in millions

MH segment sales

RV segment sales

EBITDA(1)

(1)

2001- March 2007 EBIDTA CAGR = 19%. EBITDA
is operating profit plus depreciation and amortization

Page 4

Drew’s Companies

Kinro, Inc. – Acquired 1980

Aluminum windows for RVs

Doors for RVs

Aluminum and vinyl windows and screens
for MHs

Bath and shower units for MHs and RVs

Lippert Components, Inc. – Acquired 1997

Chassis and chassis parts for RVs and MHs

Slide out mechanisms for RVs

Leveling devices for RVs

Axles for towable RVs, MHs and specialty
trailers

Specialty trailers for boats, personal
watercraft and hauling equipment

Bed lifts for “toy-hauler” RVs

Steps for RVs

Page 5

Drew’s Segments – LTM 3/31/07

MH = $18 million

28%

RV = $46 million

72%

Revenues - $694 million

90% of RV segment revenues
are for towable RVs

Segment Operating Profit - $64 million

MH = $205 million

30%

RV = $489 million

70%

Page 6

Drew’s Products

RV Chassis and Chassis Parts:
$205 million

RV Windows and Doors:

$112 million

12 Months Ended March 31, 2007

Sales - $694 million

Other: $7 million

MH and RV

Bath Products:

$23 million

Specialty

Trailers:

$22 million

RV Slide-out mechanisms:

$105 million

RV and MH Axles and
Tires: $58 million

Page 7

MH Chassis and Chassis
Parts: $81 million

MH Windows, Doors and
Screens: $81 million

Supplier to Industry Leaders

Outstanding customer service and national coverage, with 43
production facilities (approximately 3 million sq. ft.), make us a key
partner with our customers.

Supply most of the Leading Producers of RVs and MHs:

Both RV and MH

Fleetwood (NYSE:FLE)

Skyline (NYSE: SKY)

RV

Coachmen (NYSE: COA)

Forest River (owned by Berkshire Hathaway)

Monaco Coach (NYSE: MNC)

Starcraft (privately owned)

Thor (NYSE:THO)

MH

Champion (NYSE: CHB)

Clayton (owned by Berkshire Hathaway)

Oakwood Homes and Southern Energy Homes

(owned by Clayton)

Palm Harbor (Nasdaq: PHHM)

Page 8

Business Strategy

Increase sales and profitability through:

Market share growth

New product introductions

Strategic acquisitions

This strategy accomplished through:

Outstanding customer service

Motivating management through profit incentives and training
programs

Maintaining highly efficient factories by optimizing production
through state-of-the-art manufacturing technology and methods

Extensive R & D efforts

Disciplined and patient acquirer

Page 9

Content Per Vehicle - RV

Peak potential is $2,400 to $2,700 per RV

(a)

Excludes sales of specialty trailers.

(b)

Excludes sales of Emergency Living Units (“ELU’s”) purchased by FEMA.

90% of RV segment sales are for Towable RVs

See Page 17 for Industry Information

Page 10

Operating

profit margin 8.6% 9.4% 11.3% 9.2%(a) 9.6%(a) 8.6%(a 9.5%(a)

3/31/07

(a)(b)

(a)(b)

(a)

(a)

Content Per Home - MH

Peak potential is $3,200 to $3,500 per home

Operating

Profit margin 10.8% 11.0% 10.7% 10.1% 10.2% 9.5% 8.7%

See Page 21 for Industry Information

Page 11

3/31/07

New Product Introductions

Annualized sales of these products increased from about $85 million in the 1st
quarter of 2006.

(in millions)

Page 12

(a)

New product line in connection with the January 2007 acquisition of Trailair and Equa-Flex.

Acquisition Criteria

Drew is a disciplined and patient

acquirer

Target less than 6 times pro forma EBITDA

Immediately accretive

Complementary to our core RV and MH markets

Strategic
Acquisitions

Seek to acquire products or technologies that we can
introduce through our nationwide customer base and
factory network

Become a more extensive supplier to our customers

Page 13

July 2003

LTM Manufacturing

Slide-out
mechanisms,
specialty slide-out
storage trays and
decks, and electric
stabilizer jacks for
RVs. Annual sales of
$4 million

Acquisition History

Strategic
Acquisitions

June 2006

Happijac

Bed lifts for

“toy haulers”.
Annualized sales

of $15 million

May 2004

Zieman

RV, MH and
specialty
trailers. Annual
sales of over
$40 million

Each of our RV and MH acquisitions has
expanded geographic markets or
broadened product lines

2002

Quality Frames

RV chassis.
Annual sales of
$7 million

2001

Better Bath

Bath and shower
products for MH.
Annual sales of
$20 million

11 Acquisitions

1980 – 2001

Including Kinro (1980)
and Lippert
Components (1997)

May 2005

Venture Welding

MH Chassis. Annual
sales of $18 million

March 2006

Steelco

MH & RV
Chassis. Annual
sales of $8
million

Oct 2003

ET&T Frames

Primarily specialty
trailer units.
Annual sales of
$7 million

Page 14

January 2007

Trailair

Equa-Flex

RV Suspension
Systems.
Annual sales of
$3 million

Drew’s Management Team

Highly respected and experienced
management:

Drew

Leigh Abrams, CEO, 35+ years

Fred Zinn, CFO, 25+ years

Kinro

David Webster, CEO, Chairman,
30+ years

Lippert

Jason Lippert, CEO, Chairman

12+ years

Excellent management training
and incentive programs

Innovative &
Experienced
Management

Leigh Abrams

David Webster

Page 15

Jason Lippert

Investments

Kinro and Lippert have
extensive R&D departments

Since January 1997:

Invested over $154 million in
plant and equipment

Invested approximately $175
million for acquisitions

Invested $40 million for stock repurchases at an average
price of $5.37 per share

These investments have been accretive to earnings

Page 16

RVs - Industry Wholesale Shipments

(Thousands of Vehicles)

90% of Drew’s current RV product sales are for Travel Trailers and 5th Wheel RVs

(1)

Includes approximately 13,500 RVs purchased by FEMA for emergency housing for 2004 hurricane victims.

(2)

Excludes 38,900 ELU’s in 2005 and 31,400 ELU’s in 2006 purchased by FEMA. A total of 70,300 ELU’s were
purchased by FEMA for the period 9/05 to 4/06. The Company’s sales content per ELU was significantly less than
that of a typical travel trailer.

(3)

Starting in September 2005, about 27,000 towable RVs were purchased by FEMA from dealers which were
replaced by the dealers in 2005 and 2006.

(4)

Projection by RVIA. A portion of decline is attributable to FEMA units produced in 2006.

293

321

257

311

321

370

391

300

384

Page 17

41

57

42

56

344

RV Market

86% of industry 2006 unit sales

54% of wholesale dollar sales

Retail cost $4,000 to $100,000
per unit. Average about $20,000

14% of industry 2006 unit sales

46% of wholesale dollar sales

Retail cost $41,000 to $400,000+
per unit. Average about $100,000

Since 1995 the travel trailer and
5 th wheel market has grown at an
annual rate of approximately 8%,
compared to a less than 1% in-
crease in motorhome shipments.

TOWABLE RVS (90% of Drew RV revenues)

MOTORHOMES

Travel trailer with
expandable ends

Type A Motorhomes

Type B Motorhomes

Type C Motorhomes

Folding camping trailer

Travel trailer

Folding camping trailer

Sport utility RV

Fifth wheel travel trailer

Truck camper

Page 18

Growth In RV Market

Positive Demographic
Trends

Primary owners of RVs are
50 and over

According to census
projections, there are
expected to be 20 million
more people over 50 by 2014

Strong Growth
Prospects

Industry Advertising Campaign

Target Market 30 and over

Post 9/11 security concerns and high airline ticket
prices increase RV travel vacations

Fifth Wheel RV

Page 19

How RVs Are Used

Shift in U.S. culture
toward more RV-related
activities

NASCAR events

College and NFL football
games

“Toy Haulers”

More economical family
vacations

Typical RV family vacation
up to 74% less expensive

Strong Growth
Prospects

Many RVs are “parked”over the long-term

Travel Trailer

Page 20

MH - Industry Production

171

211

254

304

340

363

353

373

349

(Thousands of Homes)

131

168

193

251

(1)

131

(1)

Includes approximately 3,500, 15,000 and 3,000 for 2004, 2005 and 2006, respectively,
MHs purchased by FEMA for emergency housing for hurricane victims.

(2)

Projected by MHI.

(1)

147

(1)

117

Drew’s MH segment remained profitable every quarter since 1998.

47%

61%

59%

52%

49%

49%

47%

47%

75%

70%

65%

78%

74%

80%

72%

64%

Page 21

110

71%

Projected (2)

Manufactured Housing (MH) Market

Cost per sq. ft. is $39 for MH vs.
$91 for site-built homes

Average retail price of $62,300
for a 1,595 sq. ft. MH

9 million manufactured homes
across the U.S.

Strong Growth
Prospects

Improved quality, appearance and safety

Studies have shown that MH built since 1995 sustain no more
damage in hurricanes than site-built homes

Industry production down 69% from 1998 to 2006, but Drew’s
MH sales are up 13% and segment operating profit is down only
20%

Page 22

MH: Return to Growth

Strong Growth
Prospects

???

Page 23

MH: Industry Trends

Low inventory levels at retail dealers

Slowing of repossessions

Conventional financing now more common
than chattel financing

Improved industry lending practices should
lead to fewer repossessions

Berkshire Hathaway acquired Clayton,
Oakwood, Southern Energy and 21st
Mortgage; raised more than $8 billion for MH
financing

Recent reports of increased mortgage
applications at manufactured housing lenders

Strong Growth
Prospects

Page 24

MH: Strong Future

Baby Boomers retire and
relocate to warmer climate

Affordability

Home appreciation due to
greater ownership of land
along with home

Possible rebuilding of
hurricane-damaged areas
during late 2007

Improved industry image

Industry wide Advertising
Campaign needed

Strong
Growth
Prospects

Page 25

Drew’s Ownership and Governance

Ownership by Executives and Directors:

Currently own 16%

Filed Form S-3 on October 3, 2005. All
insider sales are complete except for
one Director. After his sale, insiders
ownership will be 12%.

Drew’s Corporate Governance Program –
ranked in the 96 th percentile of all Russell 3000
Companies by Institutional Shareholder
Services.

Added to S&P SmallCap 600 Index in October
2005

Page 26

Financial Performance

The price of Drew’s common stock is 12 times the price as of
December 31, 2000

Drew has 21.8 million shares outstanding and a market
capitalization of more than $750 million as of May 7, 2007

(December 31 unless noted)

Stock Price History

Drew effected a 2-for-1 stock split on 9/7/05 to holders of record on 8/19/05

Page 27

Operating Results

Year Ended December 31,

Financial
Performance

(1)

Excluding the estimated impact of hurricane-related sales from both 2006 and 2005, the Company
estimates that diluted EPS would have been approximately $1.33 in 2006, compared to approximately
$1.40 in 2005.

(2)

Sales during the latter part of 2006 and the first quarter of 2007 were negatively impacted by
weakness in both the RV and MH industries.

(3)

Adjusted for 2 for 1 stock split on 9/7/05.

(4)

EBITDA is operating profit plus depreciation and amortization (see page 32).

($ in millions, except EPS)

Page 28

Results By Segment

Year Ended December 31,

Financial
Performance

(a)

After a charge of $0.8 million related to legal proceedings, net of related incentive compensation.

(b)

After a gain of $0.8 million related to the sale of closed facilities, net of related incentive compensation.

(c)

Sales during the latter part of 2006 were negatively impacted by weakness in both the RV and MH
industries.

See Press Release dated February 13, 2007 for a reconciliation to consolidated results.

($ in millions)

Page 29

Operating Results

Three Months Ended March 31,

Financial
Performance

($ in millions, except EPS)

Page 30

(a)

Excluding the estimated impact of hurricane-related sales, the Company estimates that diluted
EPS would have been approximately $0.38 in the first quarter of 2006.

(b)

Sales during the first quarter of 2007 were negatively impacted by weakness in both the RV and
MH industries.

Results By Segment

Three Months Ended March 31,

Financial
Performance

($ in millions)

Page 31

See Press Release dated April 30, 2007 for a reconciliation to consolidated results.

Reconciliation of Operating Profit
to EBITDA

Financial
Performance

Page 32

($ in millions)

2001

2002

2003

2004

2005

2006

LTM

3/07

Operating Profit

$20.3

$29.2

$34.3

$44.0

$57.7

$55.3

$54.1

Depreciation and

Amortization

$8.4

$7.3

$7.8

$9.3

$12.0

$15.7

$16.6

EBITDA

$28.7

$36.5

$42.1

$53.3

$69.7

$71.0

$70.8

Capital Expenditures

$8.2

$

10.5

$5.1

$27.1

$26.1

$22.3

$15.1

Balance Sheet

Financial
Performance

(1)

Total debt was $99 million at June 30, 2006, subsequent to the acquisition of Happijac.

(2)

Days sales in accounts receivable is the most recent month’s net sales divided by accounts receivable,
net, at the end of the period.

(3)

Inventory turns is cost of goods sold for the latest quarter divided by average inventory for the quarter.

Page 33

($ in millions)

Financial Strength

Financial
Performance

Page 34

(1) EBITDA is operating profit plus depreciation and amortization (see page 32).

12/31/04

12/31/05

12/31/06

LTM 3/07

Return on Equity

23%

24%

16

%

15

%

Return on Assets

12%

12%

9

%

9

%

Total Debt to Equity

0.6

0.4

0.

3

0.

2

Total Debt to EBITDA

(1)

1.3

1.1

0

.

8

0

.

7

Peer Comparison

20%

12%

19.1

30.2

Spartan (SPAR)

(32%)

(3%)

436.0

N/A

Fleetwood (FLE)

15%

11%

16.8

24.9

Drew (DW)

ROE

ROA

Forward

P/E

Trailing

P/E

(2%)

1%

19.1

N/A

Monaco (MNC)

24%

16%

13.0

14.0

Thor (THO)

17.6

27.5

Winnebago (WGO)

16%

8%

Source: Capital IQ, May 8, 2007, except forward P/E, which is provided by
Thomson Financial and is based on fiscal 2007 analyst projections.

Financial
Performance

Page 35

Thank You

Analyst coverage:

Avondale Partners, LLC:

Kathryn Thompson (615) 467-5637

BB&T Capital Markets:

John Diffendal (615) 340-8284

Ferris, Baker Watts, Inc.

John T. G. Rogers (410) 659-4645

Sidoti & Company LLC:

Scott Stember (212) 453-7017

Susquehanna Financial Group, LLP:

Cheryl Cortez (312) 427-5236

For more information contact:

Leigh J. Abrams, President and CEO
914-428-9098

leigh@drewindustries.com

Fredric M. Zinn, Executive VP and CFO
914-428-9098

fred@drewindustries.com

Or visit: www.drewindustries.com

Page 36