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Master Lock warranty for safes

40/100 Warranty ScoreRanked 2 of 7 brandsVaries by model line
The short version

Master Lock doesn't cover everything, but keeps structure and mechanics (select registered models) and whole safe covered for life. That full coverage is the same as most of the 7 brands we compared, which typically cover nothing in full. Some of this coverage only applies if you register the product.

From Master Lock's published warranty, checked October 2026.

What's covered

Full coverage: everything, parts and laborPartial coverage: some parts only, you usually pay labor
Purchase5 yrs10 yrs+Full: NonePartial: to lifetime
  • Partial coverageStructure and mechanics (select registered models)Only if you registerLifetime
  • Partial coverageWhole safe1 year
Varies by model line

Master Lock words its warranty differently for some lines. This page shows the least generous one.

  • SafesFull: None. Partial to lifetime
  • Lock BoxesFull: None. Partial to lifetime
The fine print, decoded

What it leaves out

  • Normal wear and tear
Good to know before you buy
  • Lifetime coverage applies only to models STW082GTCML, STW123DUBML, STW123GTCML and STW205GYCML.
  • Master Lock says the warranty type can vary by product, so check your lock box's product page.
  • You may need to send the lock box back at your own cost along with your receipt.
  • Master Lock does not pay locksmith or removal labor costs.

How other brands compare for safes

Compare all 7 brands
Where you buy it matters

How long stores give you to return it

Longest return window first, for safes.

  1. CostcoMost itemsNo fixed deadline
  2. StaplesMost itemsNo fixed deadline
  3. Lowe'sMost items90 days
  4. The Home DepotMost items90 days
  5. WalmartMost items90 days
  6. Do it BestMost items30 days
Show all 7 stores
  1. WayfairMost items30 days from delivery

From each store's published return policy, using its rule for safes where it has one. Member and holiday extensions aren't counted. Check yours before you buy.

Work at Master Lock and see something out of date? Send us the current terms and we'll check and update this page.Suggest a correction

I-BUY.AI isn't paid by any brand, and ratings can't be bought. How we rate warranties