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INSTRUCTION TO REGISTERED HOLDER FROM BENEFICIAL OWNER
of
6.750% Senior Notes due March 15, 2014
of
Ainsworth Lumber Co. Ltd. To Registered Holder: The undersigned hereby acknowledges receipt of the prospectus dated
        , 2004 (the Prospectus) of Ainsworth Lumber Co. Ltd. (Ainsworth),
and accompanying letter of transmittal (the Letter of Transmittal), that
together constitute Ainsworths offer (the Exchange Offer) to exchange
US$1,000 principal amount of its 6.750% Senior Notes due March 15, 2014 (the
Exchange Notes) of Ainsworth for each US$1,000 principal amount of
outstanding 6.750% Senior Notes due March 15, 2014 (the Original Notes) of
Ainsworth. This will instruct you, the registered holder, as to the action to be
taken by you relating to the Exchange Offer with respect to the Original Notes
held by you for the account of the undersigned. The aggregate face amount of the Original Notes held by you for the
account of the undersigned is (fill in amount): US$        of 6.750% Senior Notes due March 15, 2014. With respect to the Exchange Offer, the undersigned hereby instructs you
(check appropriate box):  o To TENDER the following Original Notes held by you for the
account of the undersigned (insert stated amount at maturity of
Original Notes to be tendered (if any)): US$        of 6.750% Senior Notes due March 15, 2014.  o NOT to TENDER any Original Notes held by you for the account of
the undersigned. If the undersigned instructs you to tender Original Notes held by you for
the account of the undersigned, it is understood that you are authorized to
make, on behalf of the undersigned (and the undersigned, by its signature
below, hereby makes to you), the representations and warranties contained in
the Letter of Transmittal that are to be made with respect to the undersigned
as a beneficial owner, including but not limited to the representations, that
(i) the Exchange Notes acquired pursuant to the Exchange Offer are being
obtained in the ordinary course of business of the undersigned, (ii) neither
the undersigned nor any such other person has an arrangement or understanding
with any person to participate in the distribution of such Exchange Notes,
(iii) if the undersigned is not a broker-dealer, or is a broker-dealer but will
not receive Exchange Notes for its own account in exchange for Original Notes,
neither the undersigned nor any such other person is engaged in or intends to
participate in the distribution of such Exchange Notes and (iv) neither the
undersigned nor any such other person is an affiliate of Ainsworth within the
meaning of Rule 405 under the Securities Act of 1933, as amended (the
Securities Act), or, if the undersigned is an affiliate, that the
undersigned will comply with the registration and prospectus delivery
requirements of the Securities Act to the extent applicable. If the undersigned
is a broker-dealer (whether or not it is also an affiliate) that will receive
Exchange Notes for its own account in exchange for Original Notes, it
represents that such Original Notes were acquired as a result of market-making
activities or other trading activities, and it acknowledges that it will
deliver a prospectus meeting the requirements of the Securities Act in
connection with any resale of such Exchange Notes. By acknowledging that it
will deliver and by delivering a prospectus meeting the requirements of the
Securities Act in connection with any resale of such Exchange Notes, the
undersigned is not deemed to admit that it is an underwriter within the
meaning of the Securities Act.