SPECIFICATIONS FOR FIBREBOARD BOXES CERTIFICATE OF BOX MANUFACTURER (Applicable only in connection with Item 222)
    (a) BOXES, COMPLYING WITH THIS ITEM:
       (1) Size, Type and Wording: All fibre boxes that are made to conform to specifications of this rule must bear a legible certificate of a box manufacturer on an outside surface, guaranteeing that boxes do so conform. Certificate must be of following form, size (3-inch diameter, plus or minus 1/4 inch), type and wording, as illustrated in either paragraphs (2) or (3) (see Notes 1, 2 and 3). City and state may be either that of the manufacturing or corporate location.
       (2) Certificates applicable to boxes made to comply with the burst or puncture test and other requirements of Table A:


       (3) Certificates applicable to boxes made to comply with the edge crush test and other requirements of Table B:


    Note 1-Reduced Diameter for Small Boxes:
       On boxes having a length of less than ten inches or a width of less than nine inches, the above certificates may be reduced in size so that outside diameter is not less than two inches.
    Note 2-Boxes or Numbered Packages Made in Foreign Countries:
       Fibreboard boxes complying with the provisions of this rule, or numbered Packages of this Classification, and as amended, which are made in foreign countries and used for freight imported into the United States of America need not bear a certificate, or certificate may be printed in the language of the country in which the box or numbered package is made, provided shipper certifies on bills of lading that the boxes comply with Item 222 or the appropriate numbered Package.
    Note 3-Actual Test Above Required Minimum:
       The test stated in this certificate must be not less than the minimum required for the gross weight and dimension limit, except as provided in Note 4 of Item 222-1, and the combined weight of facings for required bursting strength must be the minimum prescribed by Item 222, Sec. 3. When the actual test is in excess of the minimum test required, the actual test may be stated below the certificate, but in such case all classes and rules in this Classification as provided for a box having minimum test will apply.
    Note 4-Nonconforming Boxes:
       In the separate description of articles when boxes not having to meet the requirements of Item 222 are authorized, such boxes are not required to be guaranteed by certification. Boxes may bear the circular certificate only when the provisions of Item 222 have been met. Such boxes may bear a straight line stamp indicating the box manufacturer and the test of the fibreboard on a voluntary basis.
    Note 5-Boxes of Mixed Components:
       For boxes having more than one fibreboard component part making up the outside shipping container, the Box Manufacturers' Certificate must reflect the lowest represented bursting test or edge crush test of any given part.
    Note 6-Fibreboard Master Pack:
       The rates or classes for freight in properly certified fibreboard or special numbered Packages will also apply on such freight when the boxes complying with Item 222 or containers complying with special numbered Packages are enclosed in outer fibreboard boxes, the fibreboard meeting the construction requirements of Item 222. Inner boxes or special numbered packages must reasonably occupy available capacity without creating voids affecting the performance of the Master Pack. Outer box must be securely closed or fastened. No certificate is required on outer box.
       Gross weight of Master Pack must not exceed 4 times the allowable gross weight authorized for the lowest burst or edge crush test of any component part of the master pack container. Gross weights exceeding this maximum weight limit must be tendered on pallets of sound construction.
    (b) NUMBERED PACKAGES:
       (1) Numbered Packages which contain provisions specifying boxes, containers, trays and component parts thereof to be made of fibreboard complying with the burst test, puncture test or edge crush test and other requirements of Tables A and B of Section 3 of this rule, must bear a legible certificate of box manufacturer on an outside surface, in the form, size (3 1/2 inches x 2 inches, plus or minus 1/4 inch), type and wording as illustrated in either subparagraph (2) or (3). City and state may be either that of the manufacturing or corporate location.
       For triplewall box, and doublewall box specifications which refer to puncture test units, substitute the words 'Puncture Test Units' for 'Bursting Test Lbs. per Sq. In.' in the certificate below.
       Where numbered Packages authorize different tests of fibreboard for bodies and caps, test of the body only need be shown within certificate.
       When numbered Package has a length of less than ten inches or a width of less than nine inches, certificate may be reduced in size, but outside dimensions must be not less than 1 1/4 x 2 1/4 inches.
       (2) Certificate applicable to numbered Packages containing provisions requiring compliance with the burst or puncture test and other requirements of Table A:


       (3) Certificate applicable to numbered Packages containing provisions requiring compliance with the edge crush test and other requirements of Table B: