[. . . ] [. . . ] Vogel's guarantee shall lapse in the following cases: - If the product has not been drilled, installed and used in accordance with the Instructions for Use; - If the product has been altered or repaired by someone a party other than Vogel's; - If a fault arises due to external causes (outside the product) such as for example lightning, water nuisance, fire, scuffing, exposure to extreme temperatures, weather conditions, solvents or acids, wrong use or negligence; - If the product is used for different equipment than is mentioned on or in the packing. OO EN Warning Correct installation is extremely essential, and falls outside the scope of responsibility of Vogel's. The fastening material provided is exclusively intended for installation on walls and ceilings made of solid wood, bricks, concrete or solid-wood columns with a maximum of 3 mm wall or ceiling finishing. For walls or ceilings made of other materials, for example hollow bricks, please consult your installer and/or specialist supplier. [. . . ] [. . . ]