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Top rated mailbox locks
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Best overall Master LockS&G 1100 Heavy Duty Combination Padlock
A robust, weather-resistant lock with a 5-digit combo, ideal for most residential mailboxes.
- Durable hardened steel body
- Weather-sealed shackle
- Combination can wear over time
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Best budget pick Master LockMaster Lock 5400D Waterproof Padlock
A low-cost, water-resistant padlock with a 4-digit combination that meets USPS requirements.
- Affordable
- Corrosion-resistant coating
- Shackle not as thick as premium models
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Best for renters KwiksetKwikset 913 4-Digit Combination Lock
A simple, easy-to-reset combination lock that fits most standard mailbox slots.
- Easy to reset
- Lightweight
- Limited security level
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Best high-security pick SCHLAGESchlage B660 Combination Padlock
Features a hardened boron alloy shackle and a 4-digit combination, offering superior resistance to bolt-cutting.
- Boron-hardened shackle
- Precision combo dial
- Higher price
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Best for high-traffic mailboxes Master LockFortress 3600G Heavy Duty Padlock
Heavy-duty lock with a large 5-digit combo, designed for frequent use and extreme weather.
- Large combo for more combos
- Stainless steel finish
- Bulky size
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Best stainless-steel option LanuBeLockwood 4011 Stainless Steel Padlock
Stainless steel construction resists rust and corrosion, with a 4-digit combination suited for coastal areas.
- Full stainless steel
- Corrosion resistant
- Combo dial can be stiff
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Best compact lock HedumeYale YVL10 5-Digit Combination Padlock
Compact 5-digit lock with a reinforced shackle, perfect for smaller mailboxes where space is limited.
- Compact size
- Reinforced shackle
- Limited combo combinations