The Wallis heavy duty earth housing is designed, shaped and sized to fit easily into brick paved walkways. Wallis heavy duty Earth inspection housing The lip of the base makes a flush fit with standard-sized bricks making the housing blend in without the need for a cement surround. The housing will withstand loads of up to 6,000 kilograms and is suitable for most commercial and industrial applications. The lid locks into the base and can be opened with a standard flat screwdriver. The base has three built-in slots for locating earth bars.