The Extra Large Digital Fire & Water Safe has the following specifications:

Exterior Dimensions: 453 x 415 x 491mm.
Interior Dimensions: 349 x 319 x 302mm.
Door Thickness: 914mm.
Body thickness: 406mm.
Interior Volume: 33.6 Litre.
Water Depth Protection: 200mm.
Weight: 38.9kg.

Works with 4 x AAA alkaline batteries (not included).