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44 mm-thick mullions, 60/90 mm boards. Assembled through an inner flush tube made of 16 mm-galvanized steel.
Mullion and transom section 44x80 mm, 19x60/80 mm matchboarding fitted to the outside edge of the frame and screwed onto the transoms. Intermediate transoms always located at the centre.
External matchboarding unit joined to internal matchboarding; matchboarding 22x70/140, screws visible on entire side.
20x30/60 external matchboarding, with a 20x70 mm frame screwed from the inside with diagonal, intermediate cross-pieces.
Multi-layered panel, pantographed with vertical and horizontal milling.
Shutters with vertical, folding matchboarding. Various typologies available: from one to four, symmetrical or asymmetrical shutters per side, with shutters folding on both sides or only on one.