Start with what you need to store, then match it to internal dimensions (not just outside measurements).

• Documents: For letter-size papers and folders, look for internal space around 9 x 12 in. or larger so pages don’t bend.
• Keys/meds/jewelry: A compact combination lock storage box (around 3–10 liters) usually works, especially with a removable tray.
• Electronics: Measure your device (e.g., a 15.6 in. laptop) and allow extra room for chargers.
• Cash drops: If you want quick deposits, consider a box or home safe with a slot.

On Walmart.com, compare internal dimensions and capacity (liters or cubic feet) on product pages, and use filters to narrow by size and features.

Protection varies by product. Many portable lockable storage boxes focus on privacy and organization rather than disaster resistance. Some home safes with combination or dial locks may list fire-resistant and/or water-resistant ratings.

• Check the product page: Look for a documented fire rating (time/temperature) and any water-resistance details.
• Understand limits: Fire- or water-resistance doesn’t guarantee contents will survive all conditions; ratings reflect specific test scenarios.
• Layer your protection: Placing documents in a fire-resistant pouch inside a safe can add an extra buffer, though results can vary.

If fire or water protection is important, filter for safes that clearly state a verified rating before you buy.

Steps differ by model, but most combination lock storage boxes follow a similar process. Always refer to the included manual.

1. Open the box using the factory code or your current code.
2. Find the reset mechanism inside (often a small switch, button, or pinhole). Some models include a reset tool.
3. Enter your new code while holding the reset control, then release to save.
4. Test several times with the door open to confirm it works smoothly.

Digital keypads and key lock boxes program differently, so follow the model-specific instructions on the product page. For security, avoid easy sequences and don’t share codes broadly.

Mounting depends on the type of lock box. Review the product description to see if wall or floor installation is supported.

• Wall-mounted key boxes: Typically include mounting points; use suitable anchors and fasten into studs or masonry when possible.
• Home safes: Many have pre-drilled anchor holes. Use the recommended hardware and follow the manual for positioning and leveling.
• Portable boxes: Some offer a cable or shackle to secure to a fixed object; drilling into plastic enclosures not designed for it isn’t advisable.

Always verify included hardware and surface compatibility. If you’re renting, consider non-permanent options like a cable-secured portable lock box.

For security reasons, most combination lock boxes can’t be reset while locked, and codes can’t be recovered by retailers. Here’s a safe next step plan:

• Check the manual: Some models outline verification and reset procedures if you can open the box.
• Find model/serial info: Locate labels or markings on the box or packaging.
• Contact the manufacturer: They may assist after ownership verification; steps vary by brand and model.
• Review your Walmart order: Your account can provide proof of purchase and product details.

Avoid forcing or tampering, which can cause damage. If access is urgent and the unit lacks an override method, replacement may be the most practical option.