Abstract: Insulating protection box, or a protection insert for certain sensitive product, like shock sensitive products, temperatures sensitive products and products inclined to explode, and made of a relatively thick, flat base material plate (1) of mineral wool or an equivalent material which at the exterior side thereof is provided with a shape keeping material (2), like a hen wire net, which is slightly pressed into the base material, which has thereafter been cured, and which at the opposite side of the base material is formed with corner recesses (6), and in which the box is manufactured by folding up side pieces (9) against the bottom (8) and the corner joints (6) are interconnected. At the exterior side the box blank may have a surface covering exteriorly of the shape keeping material (2), which surface covering may be a foil (3) of aluminum or some suitable plastic material.