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2-4 Cans and Drums

A can or drum with positive closures (clips, soldered tops,Can with a push-down top and a protruding handle. screw-on caps) is acceptable for mailing certain items such as liquids or powders. Generally, a can or drum with only friction closures (push-down types) is not acceptable. Protruding devices (such as locking rings) must be shielded or covered with padding to prevent injury to Postal Service employees or damage to other mail or mail processing equipment.

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