Aluminum is not at all toxic and is considered to be very safe as compared to other metals. The other metal is bronze which look very elegant and attractive when the products or the items are used. Bronze a metal which is used in jewelry making. Bronze is considered as metal alloy which consists of copper, but the main addictive being tin. Bronze is very much hard and brittle. It was named as the bronze age where it was known for particular significant antiquity with which thus the metal was named. The variety of products like sculptures and statutes are being made or manufactured using this metal. Bronze is less brittle than iron and hold the properties of being very light and also very efficient in term of other metals. The other products or items include musical instruments, medals etc. Brass is another metal which is an alloy of copper and zinc. Brass is used for decorating its gold like appearance items or products. Brass is known for its muted yellow color.

Grilles are very often seen on windows and doors are used for ensuring the safety of the person. Grills are basically vertical rods attached to the main frame leaving a space of two to three inches in between so that the air or water could pass by. These are often seen in houses thus to ensure the safety of the people.