At Knox Safe Custody, our Size F Safe Deposit Box offers offers exceptional capacity for clients who need a secure home for extensive collections, substantial bullion holdings, or large-format documents and valuables. This box is housed in our climate-controlled, specialist vault in Houghton, Johannesburg. Every Size F box includes R1 million cover at no extra cost. You can increase it to R5 million.

This size is ideal for storing:

• Large jewellery cases, multiple watch boxes, and curated heirloom collections
• Significant bullion holdings, bar boxes, coin sets, and monster boxes
• Binders, property files, legal archives, and extensive family documentation
• Art portfolios, certificates, archival material, or rare collectibles
• Hard drive arrays, digital storage systems, and comprehensive backup kits

Size F is the preferred choice for clients who value both capacity and discretion — providing a secure, private, fully insured environment built for long-term preservation. It offers exceptional space without compromising the refined, professional custodial care that sets the Knox vault apart.