300

Commercial Mail
Flats

Design Standards

301 Physical Standards

302 Elements on the Face of a Mailpiece

330 First-Class Mail

333 Prices and Eligibility

334 Postage Payment and Documentation

335 Mail Preparation

336 Enter and Deposit

340 Standard Mail

343 Prices and Eligibility

344 Postage Payment and Documentation

345 Mail Preparation

346 Enter and Deposit

360 Bound Printed Matter Flats

363 Prices and Eligibility

364 Postage Payment and Documentation

365 Mail Preparation

366 Enter and Deposit

370 Media Mail

373 Prices and Eligibility

374 Postage Payment and Documentation

375 Mail Preparation

376 Enter and Deposit

380 Library Mail

383 Prices and Eligibility

384 Postage Payment and Documentation

385 Mail Preparation

386 Enter and Deposit

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