Walmart offers the First Alert Combination Lock Waterproof Bolt-Down Fire Safe for $78.21 with free shipping. (Mill's Fleet Farm charges the same via pickup.) That's the lowest price we could find by $21, although we saw it for $27 less a month ago. This safe claims to be the only safe that can be bolted to the floor and remain waterproof and fire resistant with the warranty completely intact. It measures approximately 18" x 15" x 20".