(d) Staple. Too few staples result in ineffectual closures. Heavy parcels and those of unusual length should be strengthened with metal bands or reinforced tape applied around the middle. The ends of such parcels should also be reinforced. Illustration 8 shows various staple closures.

ILLUSTRATION 8

Tape in center if gap is more than 5"

chinaware, electrical appliances, jewelry, musical instruments and radios, must be marked "Fragile" by the mailer.

(b) Perishable. Products which decay quickly, such as fresh meats, fresh fruits, and vegetables, must be marked

"Perishable".

(c) Conditional labeling. (1) Words like "Do Not Bend" or "Do Not Fold or Crush" may be used only when content is fully protected with stiffening material.

(2) Words like "Rush" or "Do Not Delay" may be used only on packages intended for shipment as special delivery or special handling mail.

(d) Unauthorized labeling. (1) Labels and markings printed on cartons or on wrappers of parcels or on gummed tape on parcels are not permitted in place of any required label.

(2) Obsolete markings or labels shall be covered or obliterated.

(3) Parcels improperly labeled as to nature of contents are not acceptable.

(e) Twine. Packages may be closed or additionally reinforced by securely tying with a strong twine. Ordinary light string should not be used. Twine should be knotted at several intersecting points to preclude loosening and loss in case of breakage of one or more segments of the twine. See Illustration 6 in § 11.4.

(f) Glue. When a glue closure is used, not less than 50 percent of the area of contact (carton flaps) must be glued firmly.

§ 11.6 Marking on packages.

(a) Fragile. Packages containing articles of a delicate nature such as glass,

Size, shape, and ratio.

12.4 Window envelopes.

AUTHORITY: The provisions of this Part 12 issued under R.S. 161, as amended; 5 U.S.C. 22, 39 U.S.C. 501, 2503, 2510.

Use paper strong enough to withstand normal handling. Highly glazed paper, or paper with an overall design, is not satisfactory for showing the address and necessary postal endorsements.

[26 F.R. 11520, Dec. 6, 1961]

§ 12.3 Size, shape, and ratio.

Envelopes of standard sizes and shapes are essential to the economical handling of mail, both by machine and manual methods. The following standards apply to envelopes:

(a) Envelopes less than 3 inches in width (height) or 41⁄4 inches in length are nonmailable.

(b) Envelopes more than 9 inches in width (height) or 12 inches in length are not recommended.

(c) Envelopes having shapes other than rectangular are nonmailable.

(d) Envelopes having а ratio of width (height) to length of less than 1 to 1.414 (1 to the square root of 2) are not recommended.

[28 F.R. 1466, Feb. 15, 1963]

§ 12.4 Window envelopes.

Window envelopes, or open panel envelopes, may be used under the following conditions:

(a) The address window must be parallel with the length of the envelope.

(b) The proper place for the address window is in the lower portion of the address side.

(c) Nothing but the name, address, and any key number used by the mailer may appear through the address window.

(d) The return address should appear in the upper left corner. If there is no return address and the delivery address does not show through the window, the piece will be handled as dead mail.

(e) The address disclosed through the window must be on white paper or paper of a very light color.

(f) When used for registered mail, they must conform with the conditions in § 51.7(d) of this chapter.

[26 F.R. 11520, Dec. 6, 1961, as amended at 27 F.R. 6975, July 24, 1962]

(b) Mail for delivery through a city delivery post office must include in the address; the street and number, or post office box number, or general delivery, or rural or star route designation (except simplified address mail as prescribed in § 13.4). Mail for patrons on rural route may be addressed to street names and numbers provided this type of address has been approved by the Regional Director.

(c) All mail should bear the name and address of the sender. For instructions concerning mail which must bear a return address, see:

(1) Second-Class mail in envelopes or wrappers-§ 16.2(f) of this chapter. (2) Forth-Class mail-§ 15.5(a) (1) of this chapter.

(3) Air parcel post-§ 26.6(a) of this chapter.

(4) Mail of any class, when its return is desired-§ 48.3 of this chapter.

(5) Registered mail-§ 15.7(a) of this chapter.

(6) Insured mail-§ 52.1(b) of this chapter.

(7) COD mail—§ 53.2(c) of this chapter.

(d) Include the ZIP code in all addresses and return addresses. See § 13.6.

(e) Matter bearing dual addresses or the names of more than one post office in the return address or in the recipient's address is not acceptable for mailing.

(f) Matter bearing instructions to return to "Point of Mailing" (postmark) is not acceptable for mailing.

(g) See § 13.7 for special instructions on addressing second-class mail.

(h) See § 13.8 for special instructions on addressing overseas military mail; and §§ 111.1(b) and 121.2(d) (1) of this chapter for addressing international mail.

[26 F.R. 11520, Dec. 6, 1961, as amended at 27 F.R. 2101, Mar. 3, 1962, 28 F.R. 1995, Mar. 1, 1963, 28 F.R. 12581, Nov. 23, 1963, 29 F.R. 3809, Mar. 27, 1964]

Frank B. White

Rural Route 3, Box 261

Mitchellville, Md. 21109

U.S. POSTAGE

5¢

(b) Leave at least 31⁄2 inches of clear space, from top to bottom, at the right end of the address side of envelopes, folders, or labels. This space will be used for address, postage, postmark, and other prescribed endorsements such as "airmail" or "special delivery." On large

envelopes or mailing pieces, leave on the right end of the address side a clear rectangular space of not less than 3 by 44 inches for the address, stamps, postmarks, etc. See § 21.2(b) (2) of this chapter regarding the arrangement of the address on post cards.

FROM JOHN C.SMITH 301 WASHINGTON AVE.

WILKEVILLE, NY. 13847

Return Requested

§ 13.4 Simplified address.

(a) Rural route, star route and post office box holders-(1) Style of address. When general distribution of mail is desired for each boxholder on a rural or star route or for each family on a rural route (at any post office) or for all post office boxholders at a post office that does not have city or village carrier service, mailers may use the simplified address except as provided in paragraph (d) of this section.

POSTAL PATRON, LOCAL

A more specific address such as "Rural Route Boxholder" followed by "Local" or by the name of the post office and State may be used.

(2) Preparation requirements. (i) All pieces for the same post office must be tied, so far as practicable, in packages of 50 and a facing slip must be attached showing the distribution desired, such as: rural route, post office boxholder, etc. If the pieces are put up in quantities other than 50 for each separation, the number of pieces must be shown on the facing slip.

(ii) If selective distribution is desired, a sufficient number of pieces must be presented to cover the route or routes selected and the route numbers must be shown on the facing slips.

(iii) For other than official mailings under penalty or "Postage and Fees Paid imprint" (see § 27.2 of this chap

ter) postage at the proper rate must be fully prepaid by a method that does not require cancellation: by permit imprints, second-class imprints, meter stamps, or by means of precanceled stamp, precanceled stamped envelopes, or precanceled postal cards.

(iv) Designations such as "Farmer", "Food Buyer", "Voter", etc., are not permitted.

(b) Occupant mail. To address mail to a specific street number without addressing the occupant by name, or to a post office box without addressing the boxholder by name, the following style may be used (except as provided in paragraph (d) of this section):

Postal Patron (or Occupant, Householder, Resident, etc.)

(Street and Number, Including Apartment Number, if any, or Post Office box number)

(Post Office and State, or Local, and ZIP Code)

(c) Number of patrons. On request postmasters will furnish without charge information as follows (see also §13.5(c)):

(1) Number of post office boxholder patrons.

(2) Route numbers, and number of boxholders on each rural and star route. (3) Route numbers, and number of families on each rural route.

(4) Number of possible deliveries or possible stops with or without stores or office buildings within the total delivery area or on particular carrier routes.

(d) Mailing under Congressional frank—(1) Members and Memberselect of the Senate. All mail sent under the franking privilege by a Member or Member-elect of the Senate must be addressed to the recipient by name and post office address. See § 13.1. Franked mailings of a Member or Member-elect of the Senate may not be accepted when addressed in a simplified form for delivery either by rural or star route carrier, to any post office boxholder, or by city or village lettercarrier. This subparagraph is not applicable to nonfranked personal mailings by Members of the Senate upon which the postage is prepaid.

(2) Members and Members-elect of the House of Representatives. (i) Mail sent under the franking privilege of a member or member-elect of the House of Representatives may be addressed under the simplified forms in paragraphs (a) (1) and (b) of this section for delivery to patrons within the district the member or member-elect was elected to represent; and within such other area of the State as may be encompassed in his district under a reapportionment law. Mail so addressed will be delivered within that district to any or all of the following:

(a) Each boxholder on a rural or star route or each family on a rural or star route.

(b) Each post office boxholder.

(c) Each stop or possible delivery on city carrier routes.

(ii) The information in paragraph (c) of this section will, on request, be furnished for a congressional district in those instances where a post office serves areas which are located in more than one district.

(iii) Simplified address mailings sent under the frank of a Member or Memberelect of the House of Representatives must be prepared as prescribed in paragraph (a) (2) of this section and each facing slip should show the congressional district in which delivery is to be made.

(iv) Representatives elected at large may send franked mail with simplified address to patrons within the entire State which elected the Member.

(v) Franked mail of a Member or Member-elect addressed to a recipient outside of his congressional district must be addressed by name and post office address. See § 13.1.

(vi) This subparagraph is not applicable to nonfranked personal mailings of Members or Members-elect of the House of Representatives upon which the postage is paid.

[27 F.R. 12753, Dec. 27, 1962, as amended at 28 F.R. 12581, Nov. 13, 1963, 29 F.R. 3810, Mar. 27, 1964, 30 F.R. 8904, July 15, 1965]

§ 13.5 Mailing list services.

(a) Correction of mailing lists(1) Service available. Mailing lists submitted by departments of State