With Respect to
4³/8% Senior Notes due 2008
5³/4% Senior Notes due 2013
Pursuant to the Prospectus Dated , 2003

This form must be used by a holder of 4³/8% Senior Notes due 2008 and 5³/4% Senior Notes due 2013 (collectively, the "Old Notes") of Packaging Corporation of America, a Delaware corporation (the "Issuer"), who wishes to tender Old Notes to the Exchange Agent pursuant to the guaranteed delivery procedures described in "Exchange Offer—Guaranteed Delivery Procedures" of the Issuer's Prospectus, dated , 2003 and in Instruction 2 to the related Letter of Transmittal. Any holder who wishes to tender Old Notes pursuant to such guaranteed delivery procedures must ensure that the Exchange Agent receives this Notice of Guaranteed Delivery prior to the Expiration Date of the Exchange Offer. Capitalized terms used but not defined herein have the meanings ascribed to them in the Prospectus or the Letter of Transmittal.

Delivery of this instrument to an address other than as set forth above will not constitute a valid delivery.

This form is not to be used to guarantee signatures. If a signature on a Letter of Transmittal is required to be guaranteed by an "Eligible Institution" under the instructions thereto, such signature guarantee must appear in the applicable space provided in the signature box on the Letter of Transmittal.

The undersigned hereby tenders to the Issuer, upon the terms and subject to the conditions set forth in the Prospectus and the related Letter of Transmittal, receipt of which is hereby acknowledged, the principal amount of Old Notes set forth below pursuant to the guaranteed delivery procedures set forth in the Prospectus and in Instruction 2 of the related Letter of Transmittal.


4³/8% SENIOR NOTES DUE 2008

Certificate Number(s) (if known) of Old Notes or Account Number at the Book-Entry Facility	Aggregate Principal Amount Represented	Aggregate Principal Amount Tendered












5³/4% SENIOR NOTES DUE 2013

Certificate Number(s) (if known) of Old Notes or Account Number at the Book-Entry Facility	Aggregate Principal Amount Represented	Aggregate Principal Amount Tendered

GUARANTEE
(Not to be used for signature guarantee)

The undersigned, a firm which is a member of a registered national securities exchange or of the National Association of Securities Dealers, Inc., or is a commercial bank or trust company having an office or correspondent in the United States, or is otherwise an "eligible guarantor institution" within the meaning of Rule 17Ad-15 under the Securities Exchange Act of 1934, as amended, guarantees deposit with the Exchange Agent of the Letter of Transmittal (or facsimile thereof), together with the Old Notes tendered hereby in proper form for transfer (or confirmation of the book-entry transfer of such Old Notes into the Exchange Agent's account at the Book-Entry Transfer Facility described in the Prospectus under the caption "Exchange Offer" and in the Letter of Transmittal) and any other required documents, all by 5:00 p.m., New York City time, on the third New York Stock Exchange trading day following the Expiration Date.

DO NOT SEND OLD NOTES WITH THIS FORM. ACTUAL SURRENDER OF OLD NOTES MUST BE MADE PURSUANT TO, AND BE ACCOMPANIED BY, AN EXECUTED LETTER OF TRANSMITTAL.

1. Delivery of this Notice of Guaranteed Delivery. A properly completed and duly executed copy of this Notice of Guaranteed Delivery and any other documents required by this Notice of Guaranteed Delivery must be received by the Exchange Agent at its address as set forth herein prior to the Expiration Date. The method of delivery of this Notice of Guaranteed Delivery and any other required documents to the Exchange Agent is at the election and sole risk of the holder, and the delivery will be deemed made only when actually received by the Exchange Agent. If delivery is by mail, registered mail with return receipt requested, properly insured, is recommended. As an alternative to delivery by mail, the holders may wish to consider using an overnight or hand delivery service. In all cases, sufficient time should be allowed to assure timely delivery. For a description of the guaranteed delivery procedures, see Instruction 2 of the related Letter of Transmittal.

2. Signatures on this Notice of Guaranteed Delivery. If this Notice of Guaranteed Delivery is signed by the registered holder(s) of the Old Notes referred to herein, the signature must correspond with the name(s) written on the face of the Old Notes without alteration, enlargement, or any change whatsoever. If this Notice of Guaranteed Delivery is signed by the Trustee whose name appears on a security position listing as the owner of the Old Notes, the signature must correspond with the name shown on the security position listing as the owner of the Old Notes.

If this Notice of Guaranteed Delivery is signed by a person other than the registered holder(s) of any Old Notes listed or a participant of the Book-Entry Transfer Facility, this Notice of Guaranteed Delivery must be accompanied by appropriate bond powers, signed as the name of the registered holder(s) appears on the Old Notes or signed as the name of the participant shown on the Book-Entry Transfer Facility's security position listing.

If this Notice of Guaranteed Delivery is signed by a trustee, executor, administrator, guardian, attorney-in-fact, officer of a corporation, or other person acting in a fiduciary or representative capacity, such person should so indicate when signing and submit with the Letter of Transmittal evidence satisfactory to the Issuer of such person's authority to so act.

3. Requests for Assistance or Additional Copies. Questions and requests for assistance and requests for additional copies of the Prospectus may be directed to the Exchange Agent at the address specified in the Prospectus. Holders may also contact their broker, dealer, commercial bank, trust company, or other nominee for assistance concerning the Exchange Offer.

U.S. BANK NATIONAL ASSOCIATION (the "Exchange Agent")
By Overnight Courier, Registered/Certified Mail or By Hand:
U.S. Bank National Association Corporate Trust Services 60 Livingston Avenue St. Paul, MN 55107 Attention: Specialized Finance Department
Facsimile Transmission (for Eligible Institutions Only):		For Information or to Confirm Receipt of Facsimile by Telephone:
(651) 495-8097		(800) 934-6802

Address:				Name:		(Please Print)
(Include Zip Code)				Title:

Signatures of Registered Holder(s) or				Date:
Authorized Signatory:

Name(s):

Address(es):

Area Code and Tel. No.				Dated:			, 2003

Name(s) of Registered Holder(s):

Area Code and Telephone No.