Exhibit 4


                                                                       EXHIBIT 4

                       [LETTERHEAD OF TJ INTERNATIONAL]


                                        November 30, 1999

To our Stockholders:

   We are pleased to report that on November 23, 1999, TJ International, Inc.
entered into an Agreement and Plan of Merger with Weyerhaeuser Company and one
of its subsidiaries, WTJ, Inc., that provides for the acquisition of all of the
outstanding shares of capital stock of TJ at a price of $42.00 per share in
cash. Under the terms of the proposed acquisition, Weyerhaeuser and WTJ, Inc.
have today commenced a tender offer for all of the outstanding shares of TJ
Common Stock and TJ ESOP Convertible Preferred Stock at a price of $42.00 per
share. Following the completion of the tender offer, WTJ, Inc. will be merged
with and into TJ, and all shares not purchased in the tender offer (other than
those owned by Weyerhaeuser, WTJ, Inc. or TJ, or by holders who have perfected
appraisal rights) will be converted into the right to receive $42.00 per share
in cash in the merger.

   Your Board of Directors has unanimously (i) approved the Merger Agreement,
Weyerhaeuser's tender offer and the proposed merger, (ii) determined that the
transactions contemplated by the Merger Agreement, including Weyerhaeuser's
tender offer and the merger, are fair to and in the best interests of TJ and
its stockholders and (iii) recommended that the stockholders of TJ accept
Weyerhaeuser's tender offer and tender their shares to WTJ pursuant to the
tender offer.

   In arriving at its recommendation, the Board of Directors gave careful
consideration to a number of factors. Among other things, these factors include
the opinion of Goldman, Sachs & Co., financial advisor to TJ, that, as of
November 23, 1999, the $42.00 per share in cash proposed to be paid in
Weyerhaeuser's tender offer and the merger to the holders of TJ Common Stock
was fair from a financial point of view to such holders.

   Accompanying this letter is a copy of TJ's Solicitation/Recommendation
Statement on Schedule 14D-9, which describes in more detail the reasons for
your Board's conclusions and includes in Annex B the entire text of the opinion
of Goldman, Sachs & Co. provided to the TJ Board of Directors regarding
Weyerhaeuser's tender offer and the proposed merger, including assumptions
made, matters considered and limitations in connection with such opinion. Also
enclosed is Weyerhaeuser's Offer to Purchase and related materials, including a
Letter of Transmittal for use in tendering shares. Weyerhaeuser's documents set
forth the terms and conditions of the tender offer and provide instructions as
to how to tender your shares. We urge you to read the enclosed materials
carefully and to consider carefully all information presented.

   The Board of Directors, Management and Associates of TJ thank you for the
support you have given TJ over these many years.

                       On behalf of the Board of Directors,


                                                    
/s/ Harold E. Thomas                                         /s/ Thomas H. Denig
   Harold E. Thomas                                    Thomas H. Denig
   Co-founder and                                      President and
   Chairman of the Board                               Chief Executive Officer