Walmart has the Sentry Safe Fire-Resistant and Waterproof Box, model no. CHW30100, for $35.01 (regularly $68.39) with Free Shipping for a limited time.

The safe is 36 cubic feet and features UL classified for fire endurance, ETL verified for 1/2-hour fire protection, and ETL verified for water submersion to protect against flood damage up to 72 hours.