SFERA GROUP has always stood out in the market for its capacity of innovation, technical, stylistic and aesthetic. Therefore many patents are filed.

This propensity makes possible the characterization of  the almost complete range of products with its own exclusive solutions, absolutely differentiating than those usually offered in the market.

For brevity and avoiding what concerns only the appearance (ancient or modern paintings, metallic, etc..), here are some examples:

-The profile of connection of the window shutter-frame is characterized, in first external rabbet, by a “S” going which establishes a real "seal structure” which dead air and sound waves. 

-Since 2002, windows are no more equipped with an anti-aesthetic aluminium water drip, but with one in wood with large-scale flow of water to the outside.

-All external wood blinds, on each variant of shutter, besides being appropriately dimensioned with a thickness of 55 mm, have accentuated rounding which, besides giving a particularly appreciated appearance, are fundamental for the maintenance of the layer of paint long duration.

-The front doors have shutters formed by  “sandwich panel” to ensure a constant flatness for the change of seasons, and then avoiding the typical risk of wooden front doors, besides allowing a choice of aesthetic prospect among hundreds of variations.