The “Meta” box (with external zinc-coated metal sheet profile), generally has a variable thickness from 25 to 50 cm, which is suitable for several architectural requirements. It is suitable for masonry rib or exterior curtain covering. It is also recommended for renovation works and the replacement of traditionally made boxes.
The variable box has been designed to be suitable for masonry with particular thickness. It is built inserting a zinc-coated metal sheet connection profile of variable size into the upper panel. It is particularly recommended for renovation works and the replacement of traditional boxes or with exterior coverings or exterior insulation and finishing system.
This system is used both when the frame is at the centre of the wall and with frame flush with the inner wall. It is designed using a panel, which is fastened by screws to the box profile. The box opening takes place through the screw fastening removal.
For size exceeding 1,50 m. a central fastening of the top-cover is provided to avoid deformations. It is essential to arrange some “Z” type aluminium profiles at the base of the box, when the closure with PVC top-cover has been chosen.
It is designed using an insulating panel, which is fastened by invisible screws to the metal window frame of the front opening, which has been arranged on the internal side of the box fittingly. In this case, the box inspection and the maintenance are carried out through the front screw fastening removal. It is suitable when the other lower closure systems cannot be applied, as the case may be: