Vancouver, British Columbia, Canada, 08 May 2007 -– Ainsworth's CFO, Robert Allen, and Michael Ainsworth, executive vice president, will discuss the company's first quarter results in an investor conference call on 10 May 2007, at 10:00 a.m. Pacific Time.

The dial-in phone number is 1-800-818-6210, Reservation #21338393. To access the post-view line, dial 1-800-558-5253, or 1-416-626-4100, Reservation #21338393. This recording will be available until 17 May 2007.

For further information please contact:
Ainsworth Lumber Co. Ltd.
Suite 3194, Bentall 4
P.O. Box 49307
1055 Dunsmuir Street
Vancouver, B.C. V7X 1L3
Telephone: 604-661-3200
Facsimile: 604-661-3201
www.ainsworth.ca

Investor Relations Contacts:
Robert Allen
Chief Financial Officer
robert.allen@ainsworth.ca
Bruce Rose
General Manager, Corporate Development
bruce.rose@ainsworth.ca