EXCEPTIONS:

a. Parcels weighing less than 10 pounds, and measuring over 84 inches but not exceeding 100 inches in length and girth combined, are chargeable with a minimum rate equal to that for a 10-pound parcel for the zone to which addressed. See § 135.3 for size and weight restrictions.

b. For catalogs weighing up to 10 pounds, see paragraph (b) of this section.

c. For books and library books, see paragraphs (c) and (d) of this section.

d. For 16-millimeter films, 16-millimeter film catalogs, and related materials, see paragraphs (c) and (d) of this section.

e. Gold mailed within Alaska or from Alaska to other States and U.S. possessions: 2 cents each ounce or fraction, regardless of distance.

NOTE: The corresponding Postal Manual section is 135.11.

(b) Catalogs and similar printed advertising matter in bound form having 24 or more pages at least 22 of which are printed, weighing 16 ounces or more but not exceeding 10 pounds-(1) Rates for bulk mailings of separately addressed identical pieces in quantities of not less than 300 mailed at one time.

NOTE: The total charge for each bulk mailing shall be the sum of the charges derived by applying the applicable pound rate to the total number of pounds and by applying the applicable piece rate to the total number of pieces.

(1) Postage. Postage must be paid by permit imprints. Each imprint must show name of the post office, permit number, and the words "U.S. Postage Paid" unless the mailer is authorized to use a company permit print as provided in § 144.3 (c) of this chapter. The words "Bulk Catalog Rate" shall be printed within the permit imprint. The position of the imprint may be varied so that automatic data processing equipment may be utilized to simultaneously print the address, imprint and any other information.

(ii) Mailing statement. The mailer shall submit with each mailing a statement on Form 3605, Statement of Mail

ing Fourth-Class Catalogs at Bulk Rates, showing:

(a) Weight of a single piece.

(b) Number of pieces addressed for delivery in each zone.

(c) Total number of pieces in the mailing.

(d) Number of pounds for delivery in each zone.

(e) Total per piece charge for each

zone.

(f) Total pound rate postage for each

zone.

(g) Sum of the postage at the per piece rate and at the pound rate.

(h) Name and address of the mailer and the permit number.

(iii) Separation required. The mailer shall separate mailing pieces by parcel post zones so that postage may be verified. Mail for each parcel post zone shall be further separated and placed in sacks by cities or States of destination in each instance where there are 10 or more pieces for the same post office or State, or where 5 or more catalogs weight 10 or more pounds. No. 3 mail sacks shall be used except when greater volume requires the use of No. 2 mail sacks. When there is insufficient volume for a direct sack or a State sack, the pieces shall be combined in sacks for mixed States by parcel post zones. Each sack shall be labeled to include parcel post zone separation and destination.

In

(iv) Separations recommended. addition to the separations required in subdivision (iii) of this subparagraph, it is recommended that the mailer separate the pieces to the finest extent possible in the manner prescribed by § 134.4 (c) of this chapter.

(v) Maximum weight in a sack. The total weight of pieces placed in one sack must not exceed 80 pounds.

(2) Optional handling of bulk mailings of catalogs weighing in excess of 2 pounds when addressed for delivery in local parcel post zone only. Address labels and unaddressed catalogs weighing in excess of 2 pounds, at the option of the mailer, may be mailed separately for local delivery at the office of mailing subject to all of the following conditions:

(i) The address labels, which may not measure less than 3 by 44 inches, must show the full name and ZIP coded address of the sender and addressee and must be sorted by the mailer to the fourth and fifth digit of the ZIP Code.

(ii) Postage must be paid by permit imprints or each label, including labels

(g) Name and address of mailer and permit number.

(iv) The total weight of pieces placed in sacks, cartons, crates or any other types of containers must not exceed 80 pounds.

(v) The address labels must be sent to the postmaster at the mailing (delivery) office by the mailer.

(vi) Address labels bearing incorrect, nonexistent, or any other undeliverable addresses will be corrected or endorsed to show why they are undeliverable and returned under cover to the mailer. Each envelope shall be rated with postage due at the rate of 8 cents for each address label contained in the envelope. At the request of the mailer, the postmaster will notify the mailer, at mailer's expense and by means specified by mailer, of the number of address labels being returned. The request for notification must accompany the labels. Correctly addressed labels will be held awaiting arrival of the catalogs.

(vii) Catalogs will be deposited at the acceptance point designated by the postmaster. If the number of catalogs deposited is not enough or too many to match the number of address labels, the postmaster will notify the sender, or his designated representative or agent, of the number of catalogs required to complete the delivery or the number in excess. If the additional catalogs are not delivered to the post office within 15 days, the excess address labels will be returned under cover to the mailer. As soon as deliveries are completed, the postmaster will notify the sender or his representative of the number of any excess catalogs on hand. Excess catalogs may be called for by the mailer without charge. Any excess catalogs not called for within 15 days will be returned to sender postage due at the single piece catalog rate.

10.

§ 135.2 Classification.

(a) Description. (1) Fourth-class mail includes merchandise, printed matter, mailable live animals, and other matter not included in the first-, second-, or third-class.

(2) Zone rates in § 135.1(a) are applicable to all fourth-class mail, except that items described in § 135.1 (b), (c), and (d) may be mailed at the special rates shown in those paragraphs if desired.

(3) Catalogs and similar printed advertising matter in bound form, having 24 or more pages at least 22 of which are printed, weighing 16 ounces or more but not exceeding 10 pounds, may be accepted at the zone rates in § 135.1(b) (1) and (2).

(4) Only the following specifically described articles may be mailed at the Special Fourth-Class Rate provided by § 135.1(c):

(i) Complete books of 24 pages or more, at least 22 of which are printed, consisting wholly of reading matter or scholarly bibliography or reading matter with incidental blank spaces for notations and containing no advertising matter other than incidental announcements of books, except additions, supplements, fillers, or similar matter which are mailed thereafter and which are intended to replace or add to material in the complete book originally mailed. Advertising includes paid advertising and publishers' own advertising. Advertising may be in display, classified, or editorial style. The identification statement "Special FourthClass Rate-Books" must be placed conspicuously on the address side of each package.

(ii) 16-millimeter films, which must be positive prints in final form for viewing, and 16-millimeter film catalogs of 24 pages or more, at least 22 of which are printed, except films and film catalogs sent to commercial theaters. The identification statement "Special Fourth-Class Rate-16 mm Films" or "16 mm Film Catalog" must be placed conspicuously on the address side of each package.

(iii) Printed music whether in bound form or in sheet form. The identification statement "Special Fourth-Class Rate Printed Music" must be placed conspicuously on the address side of each package.

(iv) Printed objective test materials and accessories thereto used by or in

behalf of educational institutions for testing ability, aptitude, achievement, interests, and other mental and personal qualities with or without answers, test scores, or identifying information recorded thereon in writing or by mark. The identification statement "Special Fourth-Class Rate-Objective Test Materials" must be placed conspicuously on the address side of each package.

(v) Sound recordings, including incidental announcements of recordings and guides or scripts prepared solely for use with such recordings. Player piano rolls are classified as sound recordings. Miscellaneous advertisements, including trademarks, of persons or concerns other than the record manufacturer, are not permissible on title labels, protective sleeves, jackets, cartons, and wrappers, and such advertisements may not be mailed as enclosures. The identification statement "Special Fourth-Class Rate Sound Recordings" must be placed conspicuously on the address side of each package.

(vi) Manuscripts for books, periodical articles, and music. The identification statement "Special Fourth-Class RateManuscript" must be placed conspicuously on the address side of each package.

(vii) Printed educational reference charts, permanently processed for preservation. The identification statement "Special Fourth-Class Rate Educational Reference Charts" must be placed conspicuously on the address side of each package.

(viii) Looseleaf pages, and binders therefor, consisting of medical information for distribution to doctors, hospitals, medical schools, and medical students. The identification statement "Special Fourth-Class Rate-Medical Information" must be placed conspicuously on the address side of each package.

NOTE: When two or more articles described in this section are mailed in the same package, the appropriate descriptive terms shall be combined in the identification statement placed on the address side. Example: "Special Fourth-Class Rate-Books and Sound Recordings."

(5) Only the articles specifically described in this subparagraph may be mailed at the fourth-class library rate provided by § 135.1(d). The identifica

tion statement "Library Rate" must be placed conspicuously on the address side of each package. Each package must show in the address or the return address the name of a school, college, university, public library, or the name of a non-profit religious, educational, scientific, philanthropic, agricultural, labor, veterans, or fraternal organization or association. No permit is required.

(i) The following specific items when loaned or exchanged between schools, colleges, or universities and public libraries, nonprofit religious, educational, scientific, philanthropic, agricultural, labor, veterans, or fraternal organizations or associations; or when cooperatively processed by libraries; or when sent on loan or exchange between those libraries, organizations, or associations, and their members, readers, or borrowers; may be mailed at the Library Rate:

(a) Books, consisting wholly of reading matter or scholarly bibliography or reading matter with incidental blank spaces for notations and containing no advertising matter other than incidental announcements of books.

(b) Printed music, whether in bound form or in sheet form.

(c) Bound volumes of academic theses in typewritten or duplicated form.

(d) Periodicals, whether bound or unbound.

(e) Sound recordings. (See also subdivision (ii) (b) of this subparagraph.)

(f) Other library materials in printed, duplicated, or photographic form or in the form of unpublished manuscripts.

(ii) The following specific items when sent to or from schools, colleges, universities, or public libraries, and to or from nonprofit religious, educational, scientific, philanthropic, agricultural, labor, veterans, or fraternal organizations or associations; may be mailed at the Library Rate:

(a) 16-millimeter films; filmstrips; transparencies; slides; microfilms; all of which must be positive prints in final form for viewing.

(b) Sound recordings.

(c) Scientific or mathematical kits, instruments, or other devices.

(d) Catalogs of the materials in clauses (a), (b), and (c) of this subdivision having 24 or more pages, at least 22 of which are printed, and guides or scripts prepared solely for use with such materials.

(1) The

(b) Application of rates. rates in § 135.1 (a) and (b) are applied on the basis of weight of the individual piece and the zone between the sectional center facilities of the post offices of mailing and delivery. Articles addressed to military post offices overseas (Army, Air Force, Fleet post offices, and Naval vessels) require postage at the zone rate applicable between mailing office and post office shown in the address.

(2) There is a local zone which is defined by the Postmaster General from time to time and eight numbered zones which are determined as follows:

(i) The United States and its territories and possessions are divided into units of area 30 minutes square, identical with a quarter of the area formed by the intersecting parallels of latitude and meridians of longitude. Each unit of area is designated by a number.

(ii) The zones are based on a straight line distance between the unit of area in which the dispatching sectional center of the mailing post office is located and the unit of area in which the receiving sectional center facility of the post office of address is located, measured from the center of one unit to the nearest point in the other.

(iii) An official zone chart prepared for each sectional center will be used to determine zones from all postal units within the sectional center area. The chart to be used is identified by the inclusive ZIP Codes assigned to postal units in the sectional center. Each chart lists the first three digits (prefix) of the ZIP Codes of all sectional center offices and to the right thereof the applicable zone.

(iv) To determine the zone distance from the office of mailing to the office of address, refer to the zone chart for use at the office of mailing and locate on the chart the first three digits (prefix) of the ZIP Code of the post office of address. To the right thereof appears the