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An upright freezer in which air, at a very low temperature, is circulated by blowers; used to freeze foods in […]

Any cleaning process, such as sandblasting, in which an abrasive is directed at the surface with high velocity.

The area in which the loading of explosives and the blasting operations take place.

1.A recess in an external wall, having the external appearance of a window. 2.A window, which has been sealed off

A wall whose whole surface is unbroken by a window, door, or other opening.

A vertical member of a door-frame which has not been prepared to receive hardware.

A flange without bolt holes; otherwise complete .

Thermal insulation, commonly fabricated of fibrous glass material, with or without confining envelope, facings, or coatings; in properly selected density