Walmart offers the First Alert 0.94-Cubic Foot Combination Lock Waterproof Bolt-Down Fire Safe for $109.19 with free shipping. That's the lowest price we could find by $61, although we saw it for $13 less in December. Buy Now Tips This safe claims to be the only safe that can be bolted to the floor and still remain waterproof and fire resistant with the warranty completely intact. Features Measures approximately 18" x 15" x 20" Model: 2087F-BD