LAFAYETTE, IN–( EMWNews – April 7, 2008) – Wabash National Corporation (NYSE: WNC) today

announced that Prime Inc., one of the largest refrigerated carriers in

North America, opted to purchase 1,900 ArcticLite® refrigerated van

trailers in addition to their original order in 2005.

Wabash National’s ArcticLite trailer, known for its thermal efficiency,

continues to be the equipment solution for Prime Inc., which currently

operates a fleet that includes 3,000 ArcticLite trailers.

“We’re excited about expanding our fleet with an additional 1,900 Wabash

ArcticLite trailers to be delivered this year. Our partnership with Wabash

and purchase of their ArcticLite trailers will provide Prime’s customers

with unmatched temperature protection. These thermally efficient and

lightweight trailers are equipped with the latest technology to maximize

product protection, while reducing our carbon footprint and conserving

energy. The superior design of these trailers enables us to maximize cargo

weight and cubic capacity. We remain committed to our quest of providing

our customers with the most productive and efficient equipment available,”

said Robert Low, Prime’s founder and Chief Executive Officer.

“We once again are pleased to partner with one of the nation’s premier

refrigerated carriers, Prime Inc.,” said Dick Giromini, Wabash National’s

President and Chief Executive Officer. “Their continued support of our

ArcticLite refrigerated van truly authenticates the quality and performance

of this product.”

Headquartered in Lafayette, Ind., Wabash National® Corporation (NYSE: WNC) is one of the leading manufacturers of semi trailers in North America.

Established in 1985, the company specializes in the design and production

of dry freight vans, refrigerated vans, flatbed trailers, drop deck

trailers, and intermodal equipment. Its innovative core products are sold

under the DuraPlate®, ArcticLite®, and Eagle® brand names. The

company operates two wholly-owned subsidiaries; Transcraft® Corporation,

a manufacturer of flatbed and drop deck trailers; and Wabash National

Trailer Centers, trailer service centers and retail distributors of new and

used trailers and aftermarket parts throughout the U.S.

Founded in 1970, Prime Inc.’s corporate headquarters are located in

Springfield, Missouri. For more information on Prime Inc., visit

www.primeinc.com. Professional drivers are encouraged to stop by Prime’s

terminal at the intersection of Interstate 44 and Highway 65 in

Springfield, Missouri.