The wings are made in tubular zinc-coated steel with horizontal slats mm 43x12 fully covered in solid wood, total thickness mm 65. The wooden parts are treated with walnut dye primers, anti-mould and anti-woodworm, plus priming coat with external water paint or RAL colours. The frame is made in closed shape tubular zinc-coated steel, oven painted at 180° with polyester powder. Every wing closes by a cremone handle with locking key operating the upper and lower 18 mm stainless steel bolts which run in nylon gaskets to guarantee perfect functioning over the years (internal ironmongery completely in stainless steel). ANIMA VERSION: reinforced type with wooden slat mm 43x14 and steel core mm 30x5.