In many cases, that means replacing a round pipe with a wide concrete box-like structure.

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Behind the complex veil is a surprisingly simple reinforced-concrete box with a standard window wall and a conventional plan.

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The giant concrete box is a placeholder for a tunnel to be built later, but the box had to be built now.

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He shares a concrete box dwelling with his brother and a cousin.

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The sound wave they create, at a low 79 hertz, travels around the concrete box and gets concentrated toward a sensor on the windshield.

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Those watts power eight subwoofers housed in a five-sided concrete box.

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The facility, which is called a "gas governor" and consists of a large slab of concrete, a flue pipe and a control box, is intended to regulate gas supply in the area.

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The body was wrapped in a shroud and placed inside a wooden box with a Styrofoam lid that was itself inside a concrete vault.

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He told me of a box on his route that has a steel I-beam for a post and, riding astride it, a regular mailbox set inside a much bigger metal box, the space between the two filled entirely with concrete.

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